bash-utils.sh

#!/usr/bin/env bash
# QUICK EDIT: FILE="/tmp/bash-utils.sh" && rm -fv $FILE && nano $FILE && chmod 555 $FILE && /tmp/bash-utils.sh bashUtilsSetup
# NOTE: For this script to work properly the KIRA_GLOBS_DIR env variable should be set to "/var/kiraglob" or equivalent & the directory should exist
REGEX_DNS="^(([a-zA-Z](-?[a-zA-Z0-9])*)\.)+[a-zA-Z]{2,}$"
REGEX_IP="^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$"
REGEX_NODE_ID="^[a-f0-9]{40}$"
REGEX_TXHASH="^[a-fA-F0-9]{64}$"
REGEX_SHA256="^[a-fA-F0-9]{64}$"
REGEX_MD5="^[a-fA-F0-9]{32}$"
REGEX_INTEGER="^-?[0-9]+$"
REGEX_NUMBER="^[+-]?([0-9]*[.])?([0-9]+)?$"
REGEX_PUBLIC_IP='^([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31))(?<!127)(?<!^10)(?<!^0)\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!192\.168)(?<!172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31))\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?<!\.255$)(?<!\b255.255.255.0\b)(?<!\b255.255.255.242\b)$'
REGEX_CIRD="^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\/([0-9]|[1-2][0-9]|3[0-2])$"
REGEX_KIRA="^(kira)[a-zA-Z0-9]{39}$"
REGEX_VERSION="^(v?)([0-9]+)\.([0-9]+)\.([0-9]+)(-?)([a-zA-Z]+)?(\.?([0-9]+)?)$"
REGEX_CID="^(Qm[1-9A-HJ-NP-Za-km-z]{44,}|b[A-Za-z2-7]{58,}|B[A-Z2-7]{58,}|z[1-9A-HJ-NP-Za-km-z]{48,}|F[0-9A-F]{50,})$"
# NOTE: Important! in the REGEX_URL the ' quote character must be used instead of ", do NOT modify this string
REGEX_URL1='[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]\.[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]$'
REGEX_URL2="^(https?|ftp|file)://$REGEX_URL1"
UBUNTU_AGENT="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36"

function bashUtilsVersion() {
    bashUtilsSetup "version" 2> /dev/null || bu bashUtilsSetup "version"
}

# this is default installation script for utils
# ./bash-utils.sh bashUtilsSetup "/var/kiraglob"
function bashUtilsSetup() {
    local BASH_UTILS_VERSION="v0.3.52"
    local COSIGN_VERSION="v2.0.0"
    if [ "$1" == "version" ] ; then
        echo "$BASH_UTILS_VERSION"
        return 0
    else
        local GLOBS_DIR="$1"
        local UTILS_SOURCE=$(realpath "$0")
        local VERSION=$($UTILS_SOURCE bashUtilsVersion || echo '')
        local UTILS_DESTINATION="/usr/local/bin/bash-utils.sh"

        if [ -z "$GLOBS_DIR" ] ; then
            [ -z "$KIRA_GLOBS_DIR" ] && KIRA_GLOBS_DIR="/var/kiraglob"
        else
            KIRA_GLOBS_DIR=$GLOBS_DIR
        fi

        echo "INFO: Loaded utils from '$UTILS_SOURCE', installing bash-utils & setting up glob dir in '$KIRA_GLOBS_DIR'..."

        if [ "$VERSION" != "$BASH_UTILS_VERSION" ] ; then
            bu echoErr "ERROR: Self check version mismatch, expected '$BASH_UTILS_VERSION', but got '$VERSION'"
            return 1
        elif [ "$UTILS_SOURCE" == "$UTILS_DESTINATION" ] ; then
            bu echoErr "ERROR: Installation source script and destination can't be the same"
            return 1
        elif [ ! -f "$UTILS_SOURCE" ] ; then
            bu echoErr "ERROR: utils source was NOT found"
            return 1
        else
            mkdir -p "/usr/local/bin" "/bin" "/tmp"
            cp -fv "$UTILS_SOURCE" "$UTILS_DESTINATION"
            cp -fv "$UTILS_SOURCE" "/usr/local/bin/bash-utils"
            cp -fv "$UTILS_SOURCE" "/usr/local/bin/bu"
            cp -fv "$UTILS_SOURCE" "/bin/bu"
            chmod +x "$UTILS_DESTINATION" "/usr/local/bin/bash-utils" "/usr/local/bin/bu" "/bin/bu"

            local SUDOUSER="${SUDO_USER}" 
            local USERNAME="${USER}" 
            local LOGNAME=$(logname 2> /dev/null echo "") 
            [ "$SUDOUSER" == "root" ] && SUDOUSER=""
            [ "$USERNAME" == "root" ] && USERNAME=""
            [ "$LOGNAME" == "root" ] && LOGNAME=""

            local TARGET="/$LOGNAME/.bashrc" 
            [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET="/$USERNAME/.bashrc" && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET="/$SUDOUSER/.bashrc" && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET="/root/.bashrc" && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET=~/.bashrc && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET=~/.zshrc && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"
            TARGET=~/.profile && [ -f $TARGET ] && chmod 777 $TARGET && echoInfo "INFO: /etc/profile executable target set to $TARGET"

            mkdir -p "$KIRA_GLOBS_DIR"

            bu setGlobEnv KIRA_GLOBS_DIR "$KIRA_GLOBS_DIR"
            bu setGlobEnv KIRA_TOOLS_SRC "$UTILS_DESTINATION"
            bu setGlobPath "/usr/local/bin"
            bu setGlobPath "/bin"

            local AUTOLOAD_SET=$(bu getLastLineByPrefix "source $UTILS_DESTINATION" /etc/profile 2> /dev/null || echo "-1")

            if [[ $AUTOLOAD_SET -lt 0 ]] ; then
                echo "source $UTILS_DESTINATION || echo \"ERROR: Failed to load kira bash-utils from '$UTILS_DESTINATION'\"" >> /etc/profile
            fi

            bu loadGlobEnvs
            bu echoInfo "INFO: SUCCESS!, Installed kira bash-utils $(bu bashUtilsVersion)"
        fi

        OLD_COSIGN_VER="$(timeout 30 cosign version --json 2>&1 | bu jsonParse "gitVersion" || echo "v0.0.0")"
        if [[ $(versionToNumber "$OLD_COSIGN_VER") -lt $(versionToNumber "$COSIGN_VERSION") ]] ; then
            bu echoWarn "WARNING: Cosign tool is not installed or requires update $OLD_COSIGN_VER -> $COSIGN_VERSION..."
            declare -l ARCH="$(uname -m)"
            [[ "$ARCH" == *"ar"* ]] && ARCH="arm64" || ARCH="amd64"
            declare -l PLATFORM="$(uname)"
            declare -l FILE_NAME=$(echo "cosign-${PLATFORM}-${ARCH}")
            TMP_FILE="/tmp/${FILE_NAME}.tmp"
            rm -fv "$TMP_FILE"
            wget --user-agent="$UBUNTU_AGENT" https://github.com/sigstore/cosign/releases/download/${COSIGN_VERSION}/$FILE_NAME -O "$TMP_FILE" && \
            chmod +x -v "$TMP_FILE" && mv -fv "$TMP_FILE" /usr/local/bin/cosign && \
            cosign version || bu echoErr "ERROR: Failed to install cosign tool, some BU commands might NOT function."
        fi
    fi
}

# bash 3 (MAC) compatybility
# "$(toLower "$1")"
function toLower() {
    declare -l v="$1"
    echo "$v"
}

# bash 3 (MAC) compatybility
# "$(toUpper "$1")"
function toUpper() {
    declare -u v="$1"
    echo "$v"
}

# bash 3 (MAC) compatybility
# capitalizes first leter of a string
# e.g. toCapital "quick brown fox" -> "Quick brown fox" 
function toCapital() {
    echo "$(toUpper "$(echo "$1" | cut -c1)")$(echo "$1" | cut -c2-)"
}

function isNullOrEmpty() {
    case "$1" in
        "") echo "true" ;;
        "null") echo "true" ;;
        "Null") echo "true" ;;
        "NULL") echo "true" ;;
        "nil") echo "true" ;;
        "Nil") echo "true" ;;
        "NIL") echo "true" ;;
        *) echo "false" ;;
    esac
}

function delWhitespaces() {
    echo "$1" | tr -d '\011\012\013\014\015\040'
}

function isNullOrWhitespaces() {
    case "$1" in
        ""|[[:space:]]*) echo "true" ;;
        *) isNullOrEmpty "$1" ;;
    esac
}

function isKiraAddress() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_KIRA ]] && echo "true" || echo "false" ; fi
}

function isTxHash() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_TXHASH ]] && echo "true" || echo "false" ; fi
}

function isSHA256() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_SHA256 ]] && echo "true" || echo "false" ; fi
}

function isMD5() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_MD5 ]] && echo "true" || echo "false" ; fi
}

function isDns() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_DNS ]] && echo "true" || echo "false" ; fi
}

function isIp() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_IP ]] && echo "true" || echo "false" ; fi
}

function isPublicIp() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [ "$(echo "$1" | grep -P $REGEX_PUBLIC_IP | xargs || echo \"\")" == "$1" ] && echo "true" || echo "false" ; fi
}

function isDnsOrIp() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else
        local VAR="false" 
        ($(isDns "$1")) && VAR="true"
        [ "$VAR" != "true" ] && ($(isIp "$1")) && VAR="true"
        echo $VAR
    fi
}

# Notation check "xxx.xxx.xxx.xxx/xx"
# e.g.: isCIDR 172.22.24.212/20
function isCIDR() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_CIRD ]] && echo "true" || echo "false" ; fi
}

function isInteger() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ $1 =~ $REGEX_INTEGER ]] && echo "true" || echo "false" ; fi
}

function isBoolean() {
    if ($(bu isNullOrEmpty "$1")) ; then echo "false" ; else
        declare -l val="$1"
        if [ "$val" == "false" ] || [ "$val" == "true" ] ; then echo "true"
        else echo "false" ; fi
    fi
}

function isNodeId() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_NODE_ID ]] && echo "true" || echo "false" ; fi
}

function isNumber() {
     if ($(bu isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_NUMBER ]] && echo "true" || echo "false" ; fi
}

function isNaturalNumber() {
    ( [ ! -z "$1" ] && ( ! [[ "$1" =~ [^0-9] ]] ) && [[ "$1" -ge 0 ]] 2> /dev/null ) && echo "true" || echo "false" 
}

function isLetters() {
    ( [ -z "$1" ] || [[ "$1" =~ [^a-zA-Z] ]] ) && echo "false" || echo "true"
}

function isAlphanumeric() {
    ( [ -z "$1" ] || [[ "$1" =~ [^a-zA-Z0-9] ]] ) && echo "false" || echo "true"
}

function isPort() {
    ( ($(isNaturalNumber $1)) && (($1 > 0)) && (($1 < 65536)) ) && echo "true" || echo "false"
}

function isMnemonic() {
    local MNEMONIC=$(echo "$1" | xargs 2> /dev/null || echo -n "")
    local COUNT=$(echo "$MNEMONIC" | wc -w 2> /dev/null || echo -n "")
    (! $(isNaturalNumber $COUNT)) && COUNT=0

    # Ensure that string only contains words
    if [[ $MNEMONIC =~ ^[[:alpha:][:space:]]*$ ]] ; then
        if (( $COUNT % 3 == 0 )) && [[ $COUNT -ge 12 ]] ; then echo "true" ; else echo "false" ; fi
    else
        echo "false"
    fi
}

function isVersion {
  [[ "$1" =~ $REGEX_VERSION ]] && echo "true" || echo "false"
}

function isCID() {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; else [[ "$1" =~ $REGEX_CID ]] && echo "true" || echo "false" ; fi
}

function date2unix() {
    local DATE_TMP=""
    [ -z "$*" ] && DATE_TMP="$(timeout 1 cat 2> /dev/null || echo "")" || DATE_TMP="$*"
    DATE_TMP=$(echo "$DATE_TMP" | xargs 2> /dev/null || echo -n "")
    if (! $(isNullOrWhitespaces "$DATE_TMP")) && (! $(isNaturalNumber $DATE_TMP)) ; then
        DATE_TMP=$(date -d "$DATE_TMP" +"%s" 2> /dev/null || echo "0")
    fi

    ($(isNaturalNumber "$DATE_TMP")) && echo "$DATE_TMP" || echo "0"
}

function isPortOpen() {
    local ADDRESS=$1
    local PORT=$2
    local TIMEOUT=$3
    (! $(isNaturalNumber $TIMEOUT)) && TIMEOUT=1
    if (! $(isDnsOrIp $ADDRESS)) || (! $(isPort $PORT)) ; then echo "false"
    elif timeout $TIMEOUT nc -z $ADDRESS $PORT ; then echo "true"
    else echo "false" ; fi
}

function fileSize() {
    local BYTES=$(stat -c%s $1 2> /dev/null || echo -n "")
    ($(isNaturalNumber "$BYTES")) && echo "$BYTES" || echo -n "0"
}

function isFileEmpty() {
    local FILE="$1"
    if [ -z "$FILE" ] || [ ! -f "$FILE" ] || [ ! -s "$FILE" ] ; then echo "true" ; else
        local TEXT=$(head -c 64 "$FILE" 2>/dev/null | tr -d '\0\011\012\013\014\015\040' 2>/dev/null || echo '')
        [ -z "$TEXT" ] && TEXT=$(tail -c 64 "$FILE" 2>/dev/null | tr -d '\0\011\012\013\014\015\040' 2>/dev/null || echo '')
        [ -z "$TEXT" ] && TEXT=$(cat $FILE | tr -d '\0\011\012\013\014\015\040' 2>/dev/null || echo -n "")
        [ ! -z "$TEXT" ] && echo "false" || echo "true"
    fi
}

function isSameFile() {
    local FILE1="$1"
    local FILE2="$2"
    if [ ! -z $FILE1 ] && [ -f $FILE1 ] && [ ! -z $FILE2 ] && [ -f $FILE2 ] ; then
        echo $(cmp --silent $FILE1 $FILE2 && echo "true" || echo "false")
    else
        echo "false"
    fi
}

# Example use case: [[ $(versionToNumber "v0.0.0.3") -lt $(versionToNumber "v1.0.0.2") ]] && echo true || echo false
function versionToNumber() {
    local version=""
    [ -z "$1" ] && version="$(timeout 1 cat 2> /dev/null || echo "")" || version="$1"
    version=$(echo "$version" | tr -d [a-z,A-Z] | sed "s/-././g" | sed "s/+/./g" | sed "s/-//g" | tr -d ' ')
    local major=$(echo $version | cut -d. -f1 | sed 's/[^0-9]*//g' 2> /dev/null || echo "0")
    local minor=$(echo $version | cut -d. -f2 | sed 's/[^0-9]*//g' 2> /dev/null || echo "0")
    local micro=$(echo $version | cut -d. -f3 | sed 's/[^0-9]*//g' 2> /dev/null || echo "0")
    local build=$(echo $version | cut -d. -f4 | sed 's/[^0-9]*//g' 2> /dev/null || echo "0")
    local sum=0
    (! $(isNaturalNumber "$major")) && major=0
    (! $(isNaturalNumber "$minor")) && minor=0
    (! $(isNaturalNumber "$micro")) && micro=0
    (! $(isNaturalNumber "$build")) && build=0
    sum=$(( sum + ( 1 * build ) )) && [[ $build -le 0 ]] && build=0
    sum=$(( sum + ( 10000 * micro  ) )) && [[ $micro -le 0 ]] && micro=10000
    sum=$(( sum + ( 100000000 * minor ) )) && [[ $minor -le 0 ]] && minor=100000000
    sum=$(( sum + ( 1000000000000 * major) )) && [[ $major -le 0 ]] && major=1000000000000
    echo $sum
}

function sha256() {
    if [ -z "$1" ] ; then
        echo $(cat | sha256sum | awk '{ print $1 }' | xargs || echo -n "") || echo -n ""
    else
        [ -f $1 ] && echo $(sha256sum $1 | awk '{ print $1 }' | xargs || echo -n "") || echo -n ""
    fi
}

function md5() {
    if [ -z "$1" ] ; then
        echo $(cat | md5sum | awk '{ print $1 }' | xargs || echo -n "") || echo -n ""
    else
        [ -f $1 ] && echo $(md5sum $1 | awk '{ print $1 }' | xargs || echo -n "") || echo -n ""
    fi
}

function strLength() {
    [ "$1" == "-e" ] && echo "2" && return 0
    local result=""
    [ -z "$1" ] && result="0" || result=$(echo "$1" | awk '{print length}') || result=-1
    [[ "$result" -gt 0 ]] 2> /dev/null && echo $result || echo -1
}

function strFirstN() {
    local string="$1"
    local n="$2"
    if [ ! -z "$n" ] && [[ "$n" -gt 0 ]] 2> /dev/null ; then
        local string_len=$(strLength "$string")
        [[ $string_len -le $n ]] && echo "$string" || echo "${string:0:n}"
    else
        echo ""
    fi
}

function strLastN() {
    local string="$1"
    local n="$2"
    if [ ! -z "$n" ] && [[ "$n" -gt 0 ]] 2> /dev/null ; then
        local string_len=$(strLength "$string")
        [[ $string_len -le $n ]] && echo "$string" || echo "${string: -n}"
    else
        echo ""
    fi
}

# shortens string if possible by taking N prefix and N suffix characters and combining it with separator
# e.g. strShort "123456789" 1 "..."" -> 1...9 
function strShort() {
    local string="$1"
    local trim_len="" 
    ( [ ! -z "$2" ] && [[ "$2" -gt 0 ]] 2> /dev/null ) && trim_len="$2" || trim_len=3
    local separator="$3" 
    [ -z "$separator" ] && separator="..."
    local string_len=$(strLength "$string")
    local separator_len=$(strLength "$separator")
    local final_len=$(((trim_len * 2) + separator_len ))
    [[ $string_len -le $final_len ]] && echo "$string" || echo "$(strFirstN "$string" $trim_len)${separator}$(strLastN "$string" $trim_len)"
}

# shorten string to exact number of characters with a separator
# e.g. strShort 123456789" 5 '.' -> 1...9
function strShortN() {
    local string="$1"
    local max_len="" 
    local separator="$3" 
    local string_len=$(strLength "$string")
    ( [ ! -z "$2" ] && [[ "$2" -gt 0 ]] 2> /dev/null ) && max_len="$2" || ( echo "" && return 0 )
    ( [ -z "$separator" ] || [[ $(strLength "$separator") -gt 1 ]] ) && separator="." 
    if [[ $max_len -le 0 ]] ; then
        echo ""
    elif [[ $max_len -ge $string_len ]] ; then  # same or greater lenght, skip processing
        echo "$string"
    elif [[ $max_len -le 1 ]] ; then # if sting can be just a single char then just display separator: '.'
        echo "$separator"
    elif [[ $max_len -eq 2 ]] ; then # if sting can be just a single char then just display separator: 'a.'
        echo "$(strFirstN "$string" 1)$separator"
    elif [[ $max_len -eq 3 ]] ; then  # if sting can be just 3 char then just display first and last:  'a..'
        echo "$(strFirstN "$string" 1)${separator}${separator}"
    elif [[ $max_len -eq 4 ]] ; then # if sting can be just 4 char then just display 1 first and 1 last: 'a..b'
        echo "$(strFirstN "$string" 1)${separator}${separator}${separator}"
    else
        local side_len=$(((max_len - 3) / 2 ))
        local final_len=$(((side_len * 2) + 3))
        [[ $final_len -ne $max_len ]] && echo "$(strFirstN "$string" $((side_len + 1)))${separator}${separator}${separator}$(strLastN "$string" $side_len)" || echo "$(strShort "$string" $side_len "${separator}${separator}${separator}")"
    fi
}

# repeats string N times
# e.g.: strRepeat "a" 30 -> aaa...
strRepeat(){
    if [ "$1" == "-" ] || [ "$1" == "%" ] ; then
        [[ "$2" -gt 0 ]] 2> /dev/null && echo "$(printf "%${2}s" | sed "s/ /${1}/g")" || echo "" 
    else
        [[ "$2" -gt 0 ]] 2> /dev/null && echo "$(printf "$1"'%.s' $(eval "echo {1.."$(($2))"}"))" || echo "" 
    fi
}

# fixes string to specific length to the left with filler padding
# e.g.: echo "| $(strFixL "123456789" 15) |" -> | 123456789       |
function strFixL() {
    local string="$1"
    local max_len="" 
    local separator="$3" 
    local filler="$4"
    ( [ ! -z "$2" ] && [[ "$2" -gt 0 ]] 2> /dev/null ) && max_len="$2" || max_len="0"
    [ -z "$separator" ] && separator="."
    [ -z "$filler" ] && filler=" "
    filler=$(strRepeat "$filler" $max_len)
    echo "$(strFirstN "$(strShortN "$string" $max_len "$separator")$filler" $max_len)"
}

# fixes string to specific length to the left with filler padding
# e.g.: echo "| $(strFixR "123456789" 15) |" -> |       123456789 |
function strFixR() {
    local string="$1"
    local max_len="$2" 
    local separator="$3"
    local filler="$4" 
    ( [ ! -z "$2" ] && [[ "$2" -gt 0 ]] 2> /dev/null ) && max_len="$2" || max_len="0"
    [ -z "$separator" ] && separator="."
    [ -z "$filler" ] && filler=" "
    filler=$(strRepeat "$filler" $max_len)
    echo "$(strLastN "${filler}$(strShortN "$string" $max_len "$separator")" $max_len)"
}

# fixes string to specific length to the center with filler padding
# e.g.: echo "| $(strFixC "123456789" 15) |" -> |    123456789    |
function strFixC() {
    local string="$1"
    local max_len="$2"
    local separator="$3" 
    local filler="$4"
    ( [ ! -z "$2" ] && [[ "$2" -gt 0 ]] 2> /dev/null ) && max_len="$2" || max_len="0"
    [ -z "$separator" ] && separator="."
    [ -z "$filler" ] && filler=" "
    local filler_extr=$(strRepeat "$filler" $max_len)
    local string_len=$(strLength "$string")

    if [[ $string_len -ge $max_len ]] ; then
        echo "$(strFixL "$string" "$max_len" "$separator" "$filler")"
    else
        local remaining=$((max_len - string_len))
        local side_len=$((remaining / 2))
        local filler_extr=$(strRepeat "$filler" $side_len)
        [[ $((remaining % 2)) -eq 0 ]] && echo "${filler_extr}${string}${filler_extr}" || echo "${filler_extr}${string}${filler_extr}${filler}"
    fi
}

function strStartsWith() {
    local string="$1"
    local prefix="$2"
    local string_len=$(strLength "$string")
    local prefix_len=$(strLength "$prefix")
    if [[ $prefix_len -eq $string_len ]] && [[ $string_len -ge 1 ]] ; then
        [ "$string" == "$prefix" ] && echo "true" && return 0 || echo "false" && return 0
    elif [[ $prefix_len -le $string_len ]] && [[ $prefix_len -ge 1 ]] && [[ $string_len -ge 1 ]] ; then
        local substr="${string:0:$prefix_len}"
        [ "$substr" == "$prefix" ] && echo "true" && return 0 || echo "false" && return 0
    fi
    echo "false"
}

function strEndsWith() {
    local string="$1"
    local suffix="$2"
    local string_len=$(strLength "$string")
    local suffix_len=$(strLength "$suffix")
    if [[ $suffix_len -eq $string_len ]] && [[ $string_len -ge 1 ]] ; then
        [ "$string" == "$suffix" ] && echo "true" && return 0 || echo "false" && return 0
    elif [[ $suffix_len -le $string_len ]] && [[ $suffix_len -ge 1 ]] && [[ $string_len -ge 1 ]] ; then
        local n="-${suffix_len}"
        local substr="${string:$n}"
        [ "$substr" == "$suffix" ] && echo "true" && return 0 || echo "false" && return 0
    fi
    echo "false"
}

# splits string by specific character and takes n'th element (indexed starting at 0)
# e.g.: strSplitTakeN , 2 "a,b,c"
function strSplitTakeN() {
    local IFS="$1"
    local arr=($3)
    echo "${arr[$2]}"
}

# trims string from whitespace characters but not newlines etc
function strTrim() {
    local str="$1"
    str=${str##*( )}
    str=${str%%*( )}
    echo "$str"
}

# getArgs --test="lol1" --tes-t="lol-l" --test2="lol 2" -e=ok -t=ok2 --silent=true --invisible=yes
# internally supported flags:
# gargs_verbose (default true), gargs_throw (default true)
# getArgs --gargs_throw=false --gargs_verbose=false --test="lol1" --tes-t="lol-l" --test2="lol 2" -e=ok -t=ok2 --silent=true --invisible=yes "lol"
function getArgs() {
    local gargs_verbose="true"
    local gargs_throw="true"
    for arg in "$@" ; do
        [ -z "$arg" ] && continue
        [[ "$arg" =~ ^-[^-].* ]] && arg="-${arg}"
        if [[ "$arg" == "--"*"="* ]] && [[ "$arg" != "--="* ]] ; then
            local arg_len=$(echo "$arg" | awk '{print length}')
            local prefix=$(echo $arg | cut -d'=' -f1)
            local prefix_len=$(echo "$prefix" | awk '{print length}')
            local n="-$((arg_len - prefix_len - 1))"
            local val="${arg:$n}"
            prefix="$(echo $prefix | sed -z 's/^-*//')"
            local key=$(echo "$prefix" | tr '-' '_')

            case "$arg" in
                "-$key=''") val="" ;;
                "-$key=\"\"") val="" ;;
                "--$key=''") val="" ;;
                "--$key=\"\"") val="" ;;
                "--$key=") val="" ;;
                "-$key=") val="" ;;
                esac

            case "$key" in
                "gargs_verbose") [ "$val" == "false" ] && gargs_verbose="false" && continue || continue ;;
                "gargs_throw") [ "$val" == "false" ] && gargs_throw="false" && continue || continue ;;
                esac

            [ "$gargs_verbose" == "true" ] && echoInfo "$key='$val'"
            if [ "$gargs_throw" == "true" ]; then
                eval $key="'$val'"
            else
                eval $key="'$val'" || :
            fi
        else
            [ "$gargs_verbose" == "true" ] && echoErr "ERROR: Invalid argument '$arg', missing name, '--' and/or '=' operators ($gargs_throw)"
            [ "$gargs_throw" == "true" ] && return 1
        fi
    done

    # eval returns non 0 code, ensure to return 0
    return 0
}

# counts number of characters in a string
# strCntChar "1,2,3,4,5" ","
function strCntChar() {
    local str="$1"
    local char="$2"
    local cnt=0
    if [ ! -z "$str" ] && [ ! -z "$char" ] ; then
        cnt="$(echo "$str" | grep -o "$char" | wc -l || echo "0")"
    fi
    (! $(isNaturalNumber "$cnt")) && cnt="0"
    echo "$cnt"
}

# converts character separated ranges to whitespace separated unique ordered string
# arr=($(strRangesToArr "1-3,4,6-7" , -)) ; echo "${arr[*]}" -> "1 2 3 4 6 7"
strRangesToArr() {
    local ranges="$1"
    local char1="$2"
    local char2="$3"
    [ -z "$char1" ] && char1=","
    [ -z "$char2" ] && char2="-"
    local ranges_cnt=$(strCntChar "$ranges" "$char1")
    local res_arr=()
    local i=0
    local valStart=0
    local valEnd=0

    while [[ $i -le $ranges_cnt ]] ; do
        range="$(delWhitespaces $(strSplitTakeN "$char1" $i "$ranges"))"
        i=$((i + 1))
        ($(isNumber "$range")) && res_arr+=($range) && continue
        valStart="$(delWhitespaces $(strSplitTakeN "$char2" 0 "$range"))"
        valEnd="$(delWhitespaces $(strSplitTakeN "$char2" 1 "$range"))"
        ( (! $(isNumber "$valStart")) || (! $(isNumber "$valStart")) ) && continue
        if [[ $valStart -gt $valEnd ]] ; then
            res_arr+=($(seq $valEnd $valStart))
        else
            res_arr+=($(seq $valStart $valEnd))
        fi
    done

    res_arr=($(echo "${res_arr[*]}" | tr ' ' '\n' | sort -u -n | tr '\n' ' '))

    local OLDIFS=$IFS
    local IFS=' '
    local result="${res_arr[*]}"
    local IFS=$OLDIFS
    echo "$result"
}

# get default network interface
function getNetworkIface() {
    echo "$(netstat -rn 2> /dev/null | grep -m 1 UG | awk '{print $8}' | xargs 2> /dev/null || echo -n "")"
}

# get network interfaces
function getNetworkIfaces() {
    echo "$(ifconfig | cut -d ' ' -f1 | tr ':' '\n' | awk NF)"
}

function getPublicIp() {
    local public_ip=$(dig TXT +short o-o.myaddr.l.google.com @ns1.google.com +time=5 +tries=1 2> /dev/null | awk -F'"' '{ print $2}' 2> /dev/null || echo -n "")
    ( ! $(isDnsOrIp "$public_ip")) && public_ip=$(dig +short @resolver1.opendns.com myip.opendns.com +time=5 +tries=1 2> /dev/null | awk -F'"' '{ print $1}' 2> /dev/null || echo -n "")
    ( ! $(isDnsOrIp "$public_ip")) && public_ip=$(dig +short @ns1.google.com -t txt o-o.myaddr.l.google.com -4 2> /dev/null | xargs 2> /dev/null || echo -n "")
    ( ! $(isDnsOrIp "$public_ip")) && public_ip=$(timeout 3 curl --silent https://ipinfo.io/ip | xargs 2> /dev/null || echo -n "")
    ( ! $(isDnsOrIp "$public_ip")) && echo "" || echo "$public_ip"
}

# returns ip of the defined local network interface otherwise checks default
# .e.g getLocalIp "$(globGet IFACE)"
function getLocalIp() {
    local default_iface="$1"
    [ -z "$default_iface" ] && default_iface=$(getDefaultNetworkIface)
    local local_ip=$(/sbin/ifconfig "$default_iface" | grep -i mask | awk '{print $2}' | cut -f2 2> /dev/null || echo -n "")
    ( ! $(isDnsOrIp "$local_ip")) && local_ip=$(hostname -I | awk '{ print $1}' 2> /dev/null || echo "0.0.0.0")
    ($(isDnsOrIp "$local_ip")) && echo "$local_ip" || echo "0.0.0.0"
}

# Host list: https://ipfs.github.io/public-gateway-checker
# Given file CID downloads content from a known public IPFS gateway
# ipfsGet <file> <CID>
# ipfsGet --file=<file> --cid=<CID> --timeout="30" --url="https://ipfs.example.com/ipfs"
function ipfsGet() {
    local cid=""
    local file=""
    local url=""
    local timeout=""
    local tries=""

    getArgs --gargs_throw=false --gargs_verbose=false "$1" "$2" "$3" "$4" "$5"

    [ -z "$file" ] && file="$1"
    (! $(isCID "$cid")) && cid="$2"
    (! $(isNaturalNumber "$timeout")) && timeout=30
    (! $(isNaturalNumber "$tries")) && tries=2

    local PUB_URL=""
    local DOWNLOAD_SUCCESS="false"

    if ($(isCID "$cid")) ; then
        echoInfo "INFO: Cleaning up '$file' and searching for available gatewys..."

        if [ ! -z "$url" ] ; then
            PUB_URL="${url}/${cid}"
            if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
                wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
                 DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from ${url} :("
            fi
        fi

        PUB_URL="https://gateway.ipfs.io/ipfs/${cid}"
        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
            wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
             DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from gateway.ipfs.io :("
        fi

        PUB_URL="https://dweb.link/ipfs/${cid}"
        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
            wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
             DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from dweb.link :("
        fi

        PUB_URL="https://ipfs.joaoleitao.org/ipfs/${cid}" 
        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
            wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
             DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from ipfs.joaoleitao.org :("
        fi

        PUB_URL="https://ipfs.kira.network/ipfs/${cid}"
        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
            wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
             DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from ipfs.kira.network :("
        fi

        PUB_URL="https://ipfs.snggle.com/ipfs/${cid}"
        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] && [[ $(urlContentLength "$PUB_URL" $timeout) -gt 1 ]] ) ; then
            wget --tries="$tries" --waitretry=1 --timeout="$timeout" --user-agent="$UBUNTU_AGENT" "$PUB_URL" -O "$file" && \
             DOWNLOAD_SUCCESS="true" || echoWarn "WARNING: Faild download from ipfs.snggle.com :("
        fi

        if ( [ "$DOWNLOAD_SUCCESS" != "true" ] || [ ! -f "$file" ] ) ; then
            echoErr "ERROR: Failed to locate or download '$cid' file from any public IPFS gateway :("
            return 1
        else
            echoInfo "INFO: Success, file '$cid' was downloaded to '$file' from '$PUB_URL'"
        fi
    else
        echoErr "ERROR: Specified file CID '$cid' is NOT valid"
        return 1
    fi
}

# Allows to safely download file from external resources by hash verification or cosign file signature
# In the case where cosign verification is used the "<url>.sig" URL must exist
# safeWget <file> <url> <hash>
# safeWget <file> <url> <pubkey-path>
# safeWget <file> <url> <hash>,<hash>,<hash>...
# safeWget <file> <url> <CID>
function safeWget() {
    local OUT_PATH="$1"
    local FILE_URL="$2"
    local EXPECTED_HASH="$3"
    local timeout=""
    local sig_timeout=""
    local waitretry=""
    local tries=""
    getArgs --gargs_throw=false --gargs_verbose=false "$1" "$2" "$3" "$4" "$5" "$6" "$7"

    (! $(isNaturalNumber "$timeout")) && timeout=900
    (! $(isNaturalNumber "$sig_timeout")) && sig_timeout=30
    (! $(isNaturalNumber "$waitretry")) && waitretry=1
    (! $(isNaturalNumber "$tries")) && tries=2

    # we need to use MD5 for TMP files to ensure that we download the file again if URL changes
    local OUT_NAME=$(echo "$OUT_PATH" | md5)
    local TMP_DIR=/tmp/downloads
    local TMP_PATH="$TMP_DIR/${OUT_NAME}"

    local PUB_URL=""
    local SIG_URL="${FILE_URL}.sig"
    local TMP_PATH_SIG="$TMP_DIR/${OUT_NAME}.sig"
    local TMP_PATH_PUB="$TMP_DIR/${OUT_NAME}.pub"

    mkdir -p "$TMP_DIR"
    rm -fv "$TMP_PATH_SIG" "$TMP_PATH_PUB"

    local FILE_HASH=$(sha256 $TMP_PATH)
    local EXPECTED_HASH_ARR=($(echo "$EXPECTED_HASH" | tr ',' '\n'))
    local EXPECTED_HASH_FIRST="${EXPECTED_HASH_ARR[0]}"
    local COSIGN_PUB_KEY=""
    local PUB_URL=""
    local DOWNLOAD_SUCCESS="false"

    if (! $(isCommand cosign)) ; then
        echoErr "ERROR: Cosign tool is not installed, please install version v2.0.0 or later."
        return 1
    fi

    if (! $(isCommand curl)) ; then
        echoINFO "INFO: Curl not installed. Installing..."
        apt-get install curl -y || ( echoErr "Failed to install curl, missing dependency" && exit 1 )
    fi

    if (! $(isSHA256 "$EXPECTED_HASH_FIRST")) ; then
        if ($(isCID "$EXPECTED_HASH_FIRST")) ; then
            echoInfo "INFO: Detected IPFS CID, searching available gatewys..."
            COSIGN_PUB_KEY="$TMP_PATH_PUB"
            ipfsGet --file="$COSIGN_PUB_KEY" --cid="$EXPECTED_HASH_FIRST" --timeout="$sig_timeout"

            if ($(isFileEmpty $COSIGN_PUB_KEY)); then
                echoErr "ERROR: Failed to locate or download public key file '$EXPECTED_HASH_FIRST' from any public IPFS gateway :("
                return 1
            fi
        elif (! $(isFileEmpty "$EXPECTED_HASH_FIRST")) ; then
            echoInfo "INFO: Detected public key file"
            COSIGN_PUB_KEY="$EXPECTED_HASH_FIRST"
        fi

        if (! $(isFileEmpty $COSIGN_PUB_KEY)) || ($(urlExists "$COSIGN_PUB_KEY")) ; then
            echoWarn "WARNING: Attempting to fetch signature file..."
            wget --timeout="$sig_timeout" --tries="$tries" --waitretry=1 --user-agent="$UBUNTU_AGENT" "$SIG_URL" -O $TMP_PATH_SIG
        else
            echoErr "ERROR: Public key was not found in '$COSIGN_PUB_KEY'"
            return 1
        fi
    else
        echoInfo "INFO: One of the following checksums will be used to verify file integrity: '${EXPECTED_HASH_ARR[*]}'"
    fi

    local COSIGN_VERIFIED="false"
    if ( (! $(isFileEmpty $COSIGN_PUB_KEY)) || ($(urlExists "${COSIGN_PUB_KEY}" 1)) ) && (! $(isFileEmpty $TMP_PATH)) ; then
        echoInfo "INFO: Using cosign to verify temporary file integrity..."
        COSIGN_VERIFIED="true"  
        cosign verify-blob --key="$COSIGN_PUB_KEY" --signature="$TMP_PATH_SIG" "$TMP_PATH" --insecure-ignore-tlog --insecure-ignore-sct || \
        cosign verify-blob --key="$COSIGN_PUB_KEY" --signature="$TMP_PATH_SIG" "$TMP_PATH" || COSIGN_VERIFIED="false"

        if [ "$COSIGN_VERIFIED" == "true" ] ; then
            echoInfo "INFO: Cosign successfully verified integrity of an already existing temporary file"
            EXPECTED_HASH="$FILE_HASH"
        else
            echoInfo "INFO: Cosign failed to verify temporary file integrity"
            EXPECTED_HASH=""
        fi
    fi

    EXPECTED_HASH_ARR=($(echo "$EXPECTED_HASH" | tr ',' '\n'))
    local HASH_MATCH="false"
    for hash in "${EXPECTED_HASH_ARR[@]}" ; do
        local sanitized=$(delWhitespaces "$hash" | sed 's/^0x//')
        if [ "$FILE_HASH" == "$sanitized" ] && ($(isSHA256 "$sanitized")); then
            HASH_MATCH="true"
            echoInfo "INFO: No need to download, file with the hash '$FILE_HASH' was already found in the '$TMP_DIR' directory"
            [ "$TMP_PATH" != "$OUT_PATH" ] && cp -fv $TMP_PATH $OUT_PATH
            break
        fi
    done
    
    if [ "$HASH_MATCH" == "false" ] ; then
        rm -fv $OUT_PATH
        wget --timeout="$timeout" --tries="$tries" --waitretry=1 --user-agent="$UBUNTU_AGENT" "$FILE_URL" -O $TMP_PATH
        [ "$TMP_PATH" != "$OUT_PATH" ] && cp -fv $TMP_PATH $OUT_PATH
        FILE_HASH=$(sha256 $OUT_PATH)
    fi

    COSIGN_VERIFIED="false"
    if [ "$HASH_MATCH" == "false" ] && (! $(isFileEmpty $COSIGN_PUB_KEY)) && (! $(isFileEmpty $OUT_PATH)) ; then

        echoInfo "INFO: Using cosign to verify final file integrity..."
        COSIGN_VERIFIED="true"
        cosign verify-blob --key="$COSIGN_PUB_KEY" --signature="$TMP_PATH_SIG" "$OUT_PATH" --insecure-ignore-tlog --insecure-ignore-sct || \
        cosign verify-blob --key="$COSIGN_PUB_KEY" --signature="$TMP_PATH_SIG" "$OUT_PATH" || COSIGN_VERIFIED="false"

        if [ "$COSIGN_VERIFIED" == "true" ] ; then
            echoInfo "INFO: Cosign successfully verified integrity of downloaded file"
            EXPECTED_HASH="$FILE_HASH"
        else
            echoInfo "INFO: Cosign failed to verify integrity of downloaded file"
            EXPECTED_HASH="cosign"
        fi
    fi

    EXPECTED_HASH_ARR=($(echo "$EXPECTED_HASH" | tr ',' '\n'))
    HASH_MATCH="false"
    for hash in "${EXPECTED_HASH_ARR[@]}" ; do
        local sanitized=$(delWhitespaces "$hash" | sed 's/^0x//')
        if [ "$FILE_HASH" == "$sanitized" ] && ($(isSHA256 "$sanitized")) ; then
            HASH_MATCH="true"
            break
        fi
    done

    if ($(isFileEmpty $OUT_PATH)) ; then
        echoErr "ERROR: Failed download from '$FILE_URL', file is exmpty or was NOT found!"
        return 1
    elif [ "$HASH_MATCH" != "true" ] ; then
        rm -fv $OUT_PATH || echoErr "ERROR: Failed to delete '$OUT_PATH'"
        echoErr "ERROR: Safe download filed: '$FILE_URL' -x-> '$OUT_PATH'"
        echoErr "ERROR: Expected hash (one of): '${EXPECTED_HASH_ARR[*]}', but got '$FILE_HASH'"
        return 1
    else
        echoInfo "INFO: Safe download suceeded: '$FILE_URL' ---> '$(realpath $OUT_PATH)'"
    fi
}

function getCpuCores() {
    local CORES=$(cat /proc/cpuinfo | grep processor | wc -l 2> /dev/null || echo "0")
    ($(isNaturalNumber "$CORES")) && echo $CORES || echo "0"
}

function getRamTotal() {
    local MEMORY=$(grep MemTotal /proc/meminfo | awk '{print $2}' || echo "0")
    ($(isNaturalNumber "$MEMORY")) && echo $MEMORY || echo "0"
}

# allowed modes: 'default', 'short', 'long'
function getArch() {
    declare -l mode="$1"
    declare -l arch="$(uname -m)"
    if [[ "$arch" == *"arm"* ]] || [[ "$arch" == *"aarch"* ]] ; then
        echo "arm64"
    elif [[ "$arch" == *"x64"* ]] || [[ "$arch" == *"x86_64"* ]] || [[ "$arch" == *"amd64"* ]] || [[ "$arch" == *"amd"* ]] ; then
        if [ "$mode" == "short" ] ; then
            echo "x64"
        else
            echo "amd64"
        fi
    else
        echo "$arch"
    fi
}

function getArchX() {
    echo $(bu getArch 'short')
}

function getPlatform() {
    declare -l platform="$(uname)"
    echo "$(bu delWhitespaces "$platform")"
}

function tryMkDir {
    for kg_var in "$@" ; do
        kg_var=$(echo "$kg_var" | tr -d '\011\012\013\014\015\040' 2>/dev/null || echo -n "")
        [ -z "$kg_var" ] && continue
        [ "$(bu toLower "$kg_var")" == "-v" ] && continue
        
        if [ -f "$kg_var" ] ; then
            if [ "$(bu toLower "$1")" == "-v" ] ; then
                rm -f "$kg_var" 2> /dev/null || : 
                [ ! -f "$kg_var" ] && echo "removed file '$kg_var'" || echo "failed to remove file '$kg_var'"
            else
                rm -f 2> /dev/null || :
            fi
        fi

        if [ "$(bu toLower "$1")" == "-v" ]  ; then
            [ ! -d "$kg_var" ] && mkdir -p "$var" 2> /dev/null || :
            [ -d "$kg_var" ] && echo "created directory '$kg_var'" || echo "failed to create direcotry '$kg_var'"
        elif [ ! -d "$kg_var" ] ; then
            mkdir -p "$kg_var" 2> /dev/null || :
        fi
    done
}

function tryCat {
    if ($(isFileEmpty $1)) ; then
        echo -ne "$2"
    else
        cat $1 2>/dev/null || echo -ne "$2"
    fi
}

function isDirEmpty() {
    if [ -z "$1" ] || [ ! -d "$1" ] || [ -z "$(ls -A "$1")" ] ; then echo "true" ; else
        echo "false"
    fi
}

function isSimpleJsonObjOrArr() {
    if ($(isNullOrEmpty "$1")) ; then echo "false"
    else
        local kg_HEADS=$(echo "$1" | head -c 8)
        local kg_TAILS=$(echo "$1" | tail -c 8)
        local kg_STR=$(echo "${kg_HEADS}${kg_TAILS}" | tr -d '\n' | tr -d '\r' | tr -d '\a' | tr -d '\t' | tr -d ' ')
        if ($(isNullOrEmpty "$kg_STR")) ; then echo "false"
        elif [[ "$kg_STR" =~ ^\{.*\}$ ]] ; then echo "true"
        elif [[ "$kg_STR" =~ ^\[.*\]$ ]] ; then echo "true"
        else echo "false"; fi
    fi
}

function isSimpleJsonObjOrArrFile() {
    if [ ! -f "$1" ] ; then echo "false"
    else
        local kg_HEADS=$(head -c 8 $1 2>/dev/null || echo -ne "")
        local kg_TAILS=$(tail -c 8 $1 2>/dev/null || echo -ne "")
        echo $(isSimpleJsonObjOrArr "${kg_HEADS}${kg_TAILS}")
    fi
}

# Accepted flags (as params 4,5,6,7): sort_keys (bool), ensure_ascii (bool), encoding (str), indent (bool)
function jsonParse() {
    local QUERY=""
    local FIN=""
    local FOUT=""
    local INPUT=""
    local sort_keys="false"
    local ensure_ascii="false"
    local encoding="utf8"
    local indent="false"

    [ ! -z "${4}${5}${6}${7}" ] && getArgs --gargs_throw=false --gargs_verbose=false "$4" "$5" "$6" "$7"
    [ -z "$sort_keys" ] && sort_keys="false" || sort_keys="$(toLower "$sort_keys")"
    [ -z "$ensure_ascii" ] && ensure_ascii="false" || ensure_ascii="$(toLower "$ensure_ascii")"
    [ -z "$encoding" ] && ensure_ascii="utf8"
    [ -z "$indent" ] && indent="false" || ensure_ascii="$(toLower "$ensure_ascii")"
    sort_keys="$(toCapital "$sort_keys")"
    ensure_ascii="$(toCapital "$ensure_ascii")"
    [ "$indent" == "true" ] &&  indent=",indent=4" || indent=""

    INPUT=$(echo $1 | xargs 2> /dev/null 2> /dev/null || echo -n "")
    [ ! -z "$2" ] && FIN=$(realpath $2 2> /dev/null || echo -n "")
    [ ! -z "$3" ] && FOUT=$(realpath $3 2> /dev/null || echo -n "")
    if [ ! -z "$INPUT" ] ; then
        for k in ${INPUT//./ } ; do
            k=$(echo $k | xargs 2> /dev/null || echo -n "") && [ -z "$k" ] && continue
            [[ "$k" =~ ^\[.*\]$ ]] && QUERY="${QUERY}${k}" && continue
            ($(isNaturalNumber "$k")) && QUERY="${QUERY}[$k]" || QUERY="${QUERY}[\"$k\"]" 
        done
    fi
    if [ ! -z "$FIN" ] ; then
        if [ ! -z "$FOUT" ] ; then
            [ "$FIN" != "$FOUT" ] && rm -f "$FOUT" || :
            python3 -c "import json,sys;fin=open('$FIN',\"r\");obj=json.load(fin);fin.close();fout=open('$FOUT',\"w\",encoding=\"$encoding\");json.dump(obj$QUERY,fout,separators=(',',':')$indent,ensure_ascii=$ensure_ascii,sort_keys=$sort_keys);fout.close()"
        else
            python3 -c "import json,sys;f=open('$FIN',\"r\");obj=json.load(f);print(json.dumps(obj$QUERY,separators=(',', ':')$indent,ensure_ascii=$ensure_ascii,sort_keys=$sort_keys).strip(' \t\n\r\"'));f.close()"
        fi
    else
        cat | python3 -c "import json,sys;obj=json.load(sys.stdin);print(json.dumps(obj$QUERY,separators=(',', ':')$indent,ensure_ascii=$ensure_ascii,sort_keys=$sort_keys).strip(' \t\n\r\"'));"
    fi
}

function jsonAttributes() {
    local FIN="$1"
    if [ ! -z "$FIN" ] ; then
        if (! $(isFileEmpty "$FIN")) ; then
            python3 -c "
import json,sys;
def ptrintAttributes(root, obj):
    for key in obj:
        val=obj[key]
        if str(type(val)) == \"<class 'dict'>\":
            ptrintAttributes(root + '.' + key, val)
        else:
            print((root + '.' + key)[1:])
f=open('$FIN','r');obj=json.load(f);ptrintAttributes('', obj);f.close()"
        fi
    else
        cat | python3 -c "
import json,sys;
def ptrintAttributes(root, obj):
    for key in obj:
        val=obj[key]
        if str(type(val)) == \"<class 'dict'>\":
            ptrintAttributes(root + '.' + key, val)
        else:
            print((root + '.' + key)[1:])
obj=json.load(sys.stdin); ptrintAttributes('', obj)"
    fi
}

function isFileJson() {
    if (! $(isFileEmpty "$1")) ; then
        jsonParse "" "$1" &> /dev/null && echo "true" || echo "false"
    else
        echo "false"
    fi
}

function jsonQuickParse() {
    local OUT=""
    if [ -z "$2" ] ; then
        OUT=$(cat | grep -Eo "\"$1\"[^,]*" 2> /dev/null | grep -Eo '[^:]*$' 2> /dev/null | xargs 2> /dev/null | awk '{print $1;}' 2> /dev/null 2> /dev/null)
    else
        ($(isFileEmpty $2)) && return 2
        OUT=$(grep -Eo "\"$1\"[^,]*" $2 2> /dev/null | grep -Eo '[^:]*$' 2> /dev/null | xargs 2> /dev/null | awk '{print $1;}' 2> /dev/null 2> /dev/null)
    fi
    OUT=${OUT%\}}
    ($(isNullOrEmpty "$OUT")) && return 1
    echo "$OUT"
}

function jsonEdit() {
    local QUERY=""
    local FIN=""
    local FOUT=""
    local INPUT=$(echo $1 | xargs 2> /dev/null 2> /dev/null || echo -n "")
    local VALUE="$2"
    [ ! -z "$3" ] && FIN=$(realpath $3 2> /dev/null || echo -n "")
    [ ! -z "$4" ] && FOUT=$(realpath $4 2> /dev/null || echo -n "")

    case "$(bu toLower "$VALUE")" in
        "null") VALUE="None" ;;
        "true") VALUE="True" ;;
        "false") VALUE="False" ;;
        esac

    if [ ! -z "$INPUT" ] ; then
        for k in ${INPUT//./ } ; do
            k=$(echo $k | xargs 2> /dev/null || echo -n "") && [ -z "$k" ] && continue
            [[ "$k" =~ ^\[.*\]$ ]] && QUERY="${QUERY}${k}" && continue
            ($(isNaturalNumber "$k")) && QUERY="${QUERY}[$k]" || QUERY="${QUERY}[\"$k\"]" 
        done
    fi
    if [ ! -z "$FIN" ] ; then
        if [ ! -z "$FOUT" ] ; then
            [ "$FIN" != "$FOUT" ] && rm -f "$FOUT" || :
            python3 -c "import json,sys;fin=open('$FIN',\"r\");obj=json.load(fin);obj$QUERY=$VALUE;fin.close();fout=open('$FOUT',\"w\",encoding=\"utf8\");json.dump(obj,fout,separators=(',',':'),ensure_ascii=False);fout.close()"
        else
            python3 -c "import json,sys;f=open('$FIN',\"r\");obj=json.load(f);obj$QUERY=$VALUE;print(json.dumps(obj,separators=(',', ':'),ensure_ascii=False).strip(' \t\n\r\"'));f.close()"
        fi
    else
        cat | python3 -c "import json,sys;obj=json.load(sys.stdin);obj$QUERY=$VALUE;print(json.dumps(obj$QUERY,separators=(',', ':'),ensure_ascii=False).strip(' \t\n\r\"'));"
    fi
}

function jsonObjEdit() {
    local QUERY=""
    local FVAL=""
    local FIN=""
    local FOUT=""
    local INPUT=$(echo $1 | xargs 2> /dev/null 2> /dev/null || echo -n "")
    [ ! -z "$2" ] && FVAL=$(realpath $2 2> /dev/null || echo -n "")
    [ ! -z "$3" ] && FIN=$(realpath $3 2> /dev/null || echo -n "")
    [ ! -z "$4" ] && FOUT=$(realpath $4 2> /dev/null || echo -n "")

    case "$(bu toLower "$VALUE")" in
        "null") VALUE="None" ;;
        "true") VALUE="True" ;;
        "false") VALUE="False" ;;
        esac

    if [ ! -z "$INPUT" ] ; then
        for k in ${INPUT//./ } ; do
            k=$(echo $k | xargs 2> /dev/null || echo -n "") && [ -z "$k" ] && continue
            [[ "$k" =~ ^\[.*\]$ ]] && QUERY="${QUERY}${k}" && continue
            ($(isNaturalNumber "$k")) && QUERY="${QUERY}[$k]" || QUERY="${QUERY}[\"$k\"]" 
        done
    fi
    if [ ! -z "$FIN" ] ; then
        if [ ! -z "$FOUT" ] ; then
            [ "$FIN" != "$FOUT" ] && rm -f "$FOUT" || :
            python3 -c "import json,sys;fin=open('$FIN',\"r\");fin2=open('$FVAL',\"r\");obj2=json.load(fin2);obj=json.load(fin);obj$QUERY=obj2;fin.close();fout=open('$FOUT',\"w\",encoding=\"utf8\");json.dump(obj,fout,separators=(',',':'),ensure_ascii=False);fin2.close();fout.close()" || SUCCESS="false"
        else
            python3 -c "import json,sys;f=open('$FIN',\"r\");fin2=open('$FVAL',\"r\");obj2=json.load(fin2);obj=json.load(f);obj$QUERY=obj2;print(json.dumps(obj,separators=(',', ':'),ensure_ascii=False).strip(' \t\n\r\"'));f.close();fin2.close()"
        fi
    else
        cat | python3 -c "import json,sys;obj=json.load(sys.stdin);fin2=open('$FVAL',\"r\");obj2=json.load(fin2);obj$QUERY=obj2;print(json.dumps(obj$QUERY,separators=(',', ':'),ensure_ascii=False).strip(' \t\n\r\"'));fin2.close()"
    fi
}

function isURL() {
    if ($(isNullOrEmpty "$1")) || ($(isVersion "$1")) ; then echo "false" ; 
    else ( [[ "$1" =~ $REGEX_URL1 ]] || [[ "$1" =~ $REGEX_URL2 ]]  ) && echo "true" || echo "false" ; fi
}

# e.g. urlExists "18.168.78.192:11000/download/peers.txt" 10
function urlExists() {
    local timeout="$2" && (! $(isNaturalNumber $timeout)) && timeout=10
    if ($(isNullOrEmpty "$1")) ; then echo "false"
    elif curl -r0-0 --fail --silent -m $timeout "$1" --output /dev/null >/dev/null; then echo "true"
    else echo "false" ; fi
}

# TODO: Investigate 0 output
# urlContentLength 18.168.78.192:11000/api/snapshot 10
function urlContentLength() {
    local url="$1"
    local timeout="$2" && (! $(isNaturalNumber $timeout)) && timeout=10
    local VAL=$(curl --fail "$url" --dump-header /dev/fd/1 --silent -m $timeout --output /dev/null 2> /dev/null | grep -i Content-Length -m 1 2> /dev/null | awk '{print $2}' 2> /dev/null || echo -n "")
    # remove invisible whitespace characters
    VAL=$(echo ${VAL%$'\r'})
    (! $(isNaturalNumber $VAL)) && VAL=0
    echo $VAL
}

function globName() {
    echo "$1" | tr '[:upper:]' '[:lower:]' | tr -cd '[:alnum:]'
    return 0
}

function globName() {
    declare -l v=$(echo -n "${1//[^[:alnum:]]/}")
    echo -n "$v"
    return 0
}

function globFile() {
    declare -l FILE_NAME=$(echo -n "${1//[^[:alnum:]]/}")
    if [ ! -z "$2" ] && [ -d "$2" ] ; then
        echo "${2}/$FILE_NAME"
    elif [ ! -z "$KIRA_GLOBS_DIR" ] && [ -d "$KIRA_GLOBS_DIR" ] ; then
        echo "${KIRA_GLOBS_DIR}/$FILE_NAME"
    else
        echo "/var/kiraglob/$FILE_NAME"
    fi
    return 0
}

function globGet() {
    declare -l FILE_NAME=$(echo -n "${1//[^[:alnum:]]/}")
    if [ ! -z "$2" ] && [ -d "$2" ] ; then
        FILE_NAME="${2}/$FILE_NAME"
    elif [ ! -z "$KIRA_GLOBS_DIR" ] && [ -d "$KIRA_GLOBS_DIR" ] ; then
        FILE_NAME="${KIRA_GLOBS_DIR}/$FILE_NAME"
    else
        FILE_NAME="/var/kiraglob/$FILE_NAME"
    fi
    [[ -s "$FILE_NAME" ]] && cat $FILE_NAME || echo ""
    return 0
}

# threadsafe global get
function globGetTS() {
    local FILE=$(globFile "$1" "$2")
    [ -s "$FILE" ] && sem --id "$1" "cat $FILE" || echo ""
    return 0
}

function globSet() {
    declare -l FILE_NAME=$(echo -n "${1//[^[:alnum:]]/}")
    if [ ! -z "$3" ] && [ -d "$3" ] ; then
        FILE_NAME="${3}/$FILE_NAME"
    elif [ ! -z "$KIRA_GLOBS_DIR" ] && [ -d "$KIRA_GLOBS_DIR" ] ; then
        FILE_NAME="${KIRA_GLOBS_DIR}/$FILE_NAME"
    else
        FILE_NAME="/var/kiraglob/$FILE_NAME"
    fi

    [ ! -z ${2+x} ] && echo "$2" > "$FILE_NAME.tmp" || cat > "$FILE_NAME.tmp"
    mv -f "$FILE_NAME.tmp" $FILE_NAME
}

# threadsafe global set
function globSetTS() {
    [ ! -z "$3" ] && local FILE=$(globFile "$1" "$3") || local FILE=$(globFile "$1")
    touch "$FILE"
    [ ! -z ${2+x} ] && sem --id "$1" "echo $2 > $FILE" || sem --id "$1" --pipe "cat > $FILE"
}

function globEmpty() {
    ($(isFileEmpty $(globFile "$1" "$2"))) && echo "true" || echo "false"
}

function globDel {
    for DEL_KEY in "$@" ; do
        [ -z "$DEL_KEY" ] && continue
        globSet "$DEL_KEY" ""
    done
}

function timerStart() {
    local NAME=$1
    ($(isNullOrEmpty "$NAME")) && NAME="${BASH_SOURCE}"
    globSet "timer_start_${NAME}" "$(date -u +%s)"
    globSet "timer_stop_${NAME}" ""
    globSet "timer_elapsed_${NAME}" ""
    return 0
}

# if TIMEOUT is set then time left until TIMEOUT is calculated
function timerSpan() {
    local TIME="$(date -u +%s)"
    local NAME=$1 
    ($(isNullOrEmpty "$NAME")) && NAME="${BASH_SOURCE}"
    local TIMEOUT=$2
    local START_TIME=$(globGet "timer_start_${NAME}")
    local END_TIME=$(globGet "timer_stop_${NAME}")
    local ELAPSED=$(globGet "timer_elapsed_${NAME}")
    (! $(isNaturalNumber "$START_TIME")) && START_TIME="$TIME"
    (! $(isNaturalNumber "$END_TIME")) && END_TIME="$TIME"
    (! $(isNaturalNumber "$ELAPSED")) && ELAPSED="0"

    local SPAN="$(($END_TIME - $START_TIME))" 
    [[ $SPAN -lt 0 ]] && SPAN="0"
    SPAN="$(($SPAN + $ELAPSED))" 
    
    if ($(isNaturalNumber $TIMEOUT)) ; then
        local DELTA=$(($TIMEOUT - $SPAN))
        [[ $DELTA -lt 0 ]] && echo "0" || echo "$DELTA"
    else
        echo $SPAN
    fi
    return 0
}

function timerPause() {
    local TIME="$(date -u +%s)"
    local NAME=$1 
    ($(isNullOrEmpty "$NAME")) && NAME="${BASH_SOURCE}"
    local END_TIME=$(globGet "timer_stop_${NAME}")

    if (! $(isNaturalNumber "$END_TIME")) ; then
        globSet "timer_stop_${NAME}" "$TIME"
        local OLD_ELAPSED=$(globGet "timer_elapsed_${NAME}") 
        local START_TIME=$(globGet "timer_start_${NAME}") 
        local END_TIME=$(globGet "timer_stop_${NAME}") 
        (! $(isNaturalNumber "$OLD_ELAPSED")) && OLD_ELAPSED="0"
        (! $(isNaturalNumber "$START_TIME")) && START_TIME="$TIME"
        (! $(isNaturalNumber "$END_TIME")) && END_TIME="$TIME"
        local NOW_ELAPSED="$(($END_TIME - $START_TIME))" 
        [[ $NOW_ELAPSED -lt 0 ]] && NOW_ELAPSED="0"
        globSet "timer_start_${NAME}" "$TIME"
        globSet "timer_elapsed_${NAME}" "$(($NOW_ELAPSED + $OLD_ELAPSED))"
    fi
    return 0
}

function timerUnpause() {
    local NAME=$1 
    ($(isNullOrEmpty "$NAME")) && NAME="${BASH_SOURCE}"
    local END_TIME=$(globGet "timer_stop_${NAME}")

    if ($(isNaturalNumber "$END_TIME")) ; then
        globSet "timer_start_${NAME}" "$(date -u +%s)"
        globSet "timer_stop_${NAME}" ""
    fi
    return 0
}

function timerDel() {
    if [ -z "$@" ] ; then
        local NAME="$BASH_SOURCE"
        globSet "timer_start_${NAME}" ""
        globSet "timer_stop_${NAME}" ""
    else
        for CLEAR_KEY in "$@" ; do
            [ -z "$CLEAR_KEY" ] && CLEAR_KEY="$BASH_SOURCE"
            globSet "timer_start_${CLEAR_KEY}" ""
            globSet "timer_stop_${CLEAR_KEY}" ""
        done
    fi
    return 0
}

function prettyTime {
  local T=$(date2unix "$1")
  local D=$((T/60/60/24))
  local H=$((T/60/60%24))
  local M=$((T/60%60))
  local S=$((T%60))
  (( $D > 0 )) && (( $D > 1 )) && printf '%d days ' $D
  (( $D > 0 )) && (( $D < 2 )) && printf '%d day ' $D
  (( $H > 0 )) && (( $H > 1 )) && printf '%d hours ' $H
  (( $H > 0 )) && (( $H < 2 )) && printf '%d hour ' $H
  (( $M > 0 )) && (( $M > 1 )) && printf '%d minutes ' $M
  (( $M > 0 )) && (( $M < 2 )) && printf '%d minute ' $M
  (( $S != 1 )) && printf '%d seconds\n' $S || printf '%d second\n' $S
}

function prettyTimeSlim {
  local T=$(date2unix "$1")
  local D=$((T/60/60/24))
  local H=$((T/60/60%24))
  local M=$((T/60%60))
  local S=$((T%60))
  (( $D > 0 )) && (( $D > 1 )) && printf '%dd ' $D
  (( $D > 0 )) && (( $D < 2 )) && printf '%dd ' $D
  (( $H > 0 )) && (( $H > 1 )) && printf '%dh ' $H
  (( $H > 0 )) && (( $H < 2 )) && printf '%dh ' $H
  (( $M > 0 )) && (( $M > 1 )) && printf '%dm ' $M
  (( $M > 0 )) && (( $M < 2 )) && printf '%dm ' $M
  (( $S != 1 )) && printf '%ds\n' $S || printf '%ds\n' $S
}

# fromats Bytes into k, M, G, T, P - Bytes
# prettyBytes <size> <decimals>
function prettyBytes {
  local size="$1" && (! $(isNaturalNumber "$size")) && size=0
  local decimals="$2" && (! $(isNaturalNumber "$decimals")) && decimals=3

  if [[ $size -lt 1024 ]] ; then
    echo "$size B"
  elif [[ $size -lt 1048576 ]] ; then
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1024" | bc))
    echo "$size kB"
  elif [[ $size -lt 1073741824 ]] ; then
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1048576" | bc))
    echo "$size MB"
  elif [[ $size -lt 1099511627776 ]] ; then
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1073741824" | bc))
    echo "$size GB"
  elif [[ $size -lt 1125899906842624 ]] ; then
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1099511627776" | bc))
    echo "$size TB"
  elif [[ $size -lt 1152921504606846976 ]] ; then
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1125899906842624" | bc))
    echo "$size PB"
  else
    size=$(printf "%.${decimals}f" $(echo "scale=3; $size/1152921504606846976" | bc))
    echo "$size EB"
  fi
}

function prettyBits {
    local str="$(prettyBytes "$1" "$2")"
    echo "${str%?}"`echo "${str: -1}" | tr '[:upper:]' '[:lower:]'`
}

function resolveDNS {
    if ($(isIp "$1")) ; then
        echo "$1"
    else
        local DNS_NAME=$(timeout 10 dig +short "$1" 2> /dev/null || echo -e "")
        ($(isIp $DNS_NAME)) && echo $DNS_NAME || echo -e ""
    fi
}

function isSubStr {
    local STR="$1"
    local SUB="$2"
    SUB=${SUB//"\n"/"\\n"}
    local L1=${#STR}
    STR=${STR//"$SUB"/""}
    local L2=${#STR}
    [ $L1 -ne $L2 ] && echo "true" || echo "false"
}

function isCommand {
    if ($(isNullOrEmpty "$1")) ; then echo "false" ; elif command -v "$1" &> /dev/null ; then echo "true" ; else echo "false" ; fi
}

function isServiceActive {
    declare -l ISACT=$(systemctl is-active "$1" 2> /dev/null || echo "inactive")
    [ "$ISACT" == "active" ] && echo "true" || echo "false"
}

function isWSL {
    echo "$(isSubStr "$(uname -a)" "microsoft-standard-WSL")"
}

# returns 0 if failure, otherwise natural number in microseconds
function pingTime() {
    if ($(isDnsOrIp "$1")) ; then
        local PAVG=$(ping -qc1 "$1" 2>&1 | awk -F'/' 'END{ print (/^rtt/? $5:"FAIL") }' 2> /dev/null || echo -n "")
        if ($(isNumber $PAVG)) ; then
            local PAVGUS=$(echo "scale=3; ( $PAVG * 1000 )" | bc 2> /dev/null || echo -n "")
            PAVGUS=$(echo "scale=0; ( $PAVGUS / 1 ) " | bc 2> /dev/null || echo -n "")
            ($(isNaturalNumber $PAVGUS)) && echo "$PAVGUS" || echo "0"
        else echo "0" ; fi
    else echo "0" ; fi
}

# sets global var with user selection, default var name is OPTION
# e.g.: echoNC "bli;whi" "Press a, b or c: " && pressToContinue --glob=TEST --cursor=true --timeout=100 a b c 
# e.g.: echoNC "bli;whi" "Press any key to continue..." && pressToContinue --cursor=false
function pressToContinue {
    function pressToContinueCleanup() {
        setterm -cursor on
        trap - SIGINT || :
        return 130
    }

    trap pressToContinueCleanup SIGINT

    local glob="OPTION"
    local timeout=0
    local cursor=true
    getArgs --gargs_verbose=false --gargs_throw=false "$1" "$2" "$3"
    (! $(isNaturalNumber "$timeout")) && timeout=0
    [ "$cursor" != "false" ] && cursor=true

    local OPTION=""
    local FOUND=false
    local TIME_START="$(date -u +%s)"
    local TIME_END="$TIME_START"
    local TIME_SPAN=0
    local EXIT_CODE=0
    local ALL_FLAGS=true

    [ "$cursor" == "false" ] && setterm -cursor off || setterm -cursor on

    if ($(isNullOrEmpty "$1")) ; then
        OPTION=""
        if [[ $timeout -gt 0 ]] ; then
            read -t "$timeout" -n 1 -s OPTION
        else
            read -n 1 -s OPTION
        fi
        globSet "$glob" ""
    else
        while : ; do
            OPTION=""
            FOUND=false
            if [[ $timeout -gt 0 ]] ; then
                read -t "$timeout" -n 1 -s OPTION
            else
                read -n 1 -s OPTION
            fi
            
            declare -l lopt="$OPTION"
            for kg_var in "$@" ; do
                declare -l var=$(echo "$kg_var" | tr -d '\011\012\013\014\015\040' 2>/dev/null || echo -n "")
                ( [ ! -z "$var" ] && [ "$var" == "$lopt" ] ) && globSet "$glob" "$lopt" && FOUND=true && break
                [[ "${var:0:2}" != "--" ]] && ALL_FLAGS="false"
            done

            [ "$FOUND" == "true" ] && break
            [ "$ALL_FLAGS" == "true" ] && break

            TIME_END="$(date -u +%s)"
            TIME_SPAN=$((TIME_END - TIME_START))
            if [[ $timeout -gt 0 ]] && [[ $TIME_SPAN -gt $timeout ]] ; then
                globSet "$glob" ""
                EXIT_CODE=142
                break
            fi
        done 
    fi

    if [ "$cursor" == "false" ] ; then
        setterm -cursor on
    fi

    trap - SIGINT || :
    echo ""
    return $EXIT_CODE
}

displayAlign() {
    local align=$1
    local width=$2
    local text=$3

    if [ $align == "center" ]; then
        local textRight=$(((${#text} + $width) / 2))
        printf "|%*s %*s\n" $textRight "$text" $(($width - $textRight)) "|"
    elif [ $align == "left" ]; then
        local textRight=$width
        printf "|%-*s|\n" $textRight "$text"
    fi
}

# print with colours, to restore default use 'tput reset' or 'tput sgr0'
# recognisable color types: [bla]ck, [red], [gre]en, [yel]low, [blu], [mag]enta, [cya]n
# recognisable font types: [bol]d, [dim], [ita]lic, [und]er, [bli]nk, [inv]erse, [str]ike, [per]sustent, [sto]re, [res]tore, [cle]ar
# recognisable intensities: [bri]gth (true/1), [dar]k (false/0)
# e.g.: echoNC "<font>;<foreground>;<bacground>;<fr-intensity>;<bg-intensity>;<persistent>;<store/restore>" "test text"
# e.g.: echoNC "bli;whi;bla;d;b;false" "test text"
# echoC "sto;blu" "|---------$(echoC "res;gre" "lol")---------|"
# echoC "sto;whi" "|$(echoC "res;bla" "$(strRepeat - 78)")|"
function echoNC() {
    local IFS=";"
    local arr=($1)
    local font="${arr[0]}"
    local fgrnd="${arr[1]}"
    local bgrnd="${arr[2]}"
    local fint="${arr[3]}"
    local bint="${arr[4]}"
    local persistent="${arr[5]}"
    local store="${arr[6]}"
    local text="$2"

    case $persistent in
    "") persistent="false" ;;
    "0") persistent="false" ;;
    esac

    case $persistent in
    "") persistent="false" ;;
    "0") persistent="false" ;;
    "1") persistent="true" ;;
    "per") persistent="true" ;;
    "p") persistent="true" ;;
    esac

    case $store in
    "") store="false" ;;
    "0") store="false" ;;
    "s") store="store" ;;
    "sto") store="store" ;;
    "r") store="restore" ;;
    "res") store="restore" ;;
    "c") store="clear" ;;
    "cle") store="clear" ;;
    esac

   case $font in
    "") font=0 ;;
    "nor") font=0 ;;
    "nul") font=0 ;;
    "true") font=0 ;;
    "bol") font=1 ;;
    "dim") font=2 ;;
    "ita") font=3 ;;
    "und") font=4 ;;
    "bli") font=5 ;;
    "inv") font=7 ;;
    "str") font=9 ;;
    "false") font=9 ;;
    "per") persistent="true" ; font=0  ;;
    "sto") store="store"     ; font=0  ;;
    "res") store="restore"   ; font=0  ;;
    "cle") store="clear"     ; font=0  ;;
    esac

    case $fgrnd in
    "bla") fgrnd=30 ;;
    "false") fgrnd=30 ;;
    "red") fgrnd=31 ;;
    "gre") fgrnd=32 ;;
    "yel") fgrnd=33 ;;
    "blu") fgrnd=34 ;;
    "mag") fgrnd=35 ;;
    "cya") fgrnd=36 ;;
    "") fgrnd=37 ;;
    "whi") fgrnd=37 ;;
    "true") fgrnd=37 ;;
    esac

    case $bgrnd in
    "") bgrnd=40 ;;
    "bla") bgrnd=40 ;;
    "true") bgrnd=40 ;;
    "red") bgrnd=41 ;;
    "gre") bgrnd=42 ;;
    "yel") bgrnd=43 ;;
    "blu") bgrnd=44 ;;
    "mag") bgrnd=45 ;;
    "cya") bgrnd=46 ;;
    "whi") bgrnd=47 ;;
    "false") bgrnd=47 ;;
    esac

    if [[ $fgrnd -ge 90 ]] ; then
        case $fint in
        "dar") fgrnd=$((fgrnd - 60)) ;;
        "d") fgrnd=$((fgrnd - 60)) ;;
        "0") fgrnd=$((fgrnd - 60)) ;;
        "false") fgrnd=$((fgrnd - 60)) ;;
        esac
    fi

    case $fint in
    "") fgrnd=$((fgrnd + 60)) ;;
    "bri") fgrnd=$((fgrnd + 60)) ;;
    "b") fgrnd=$((fgrnd + 60)) ;;
    "1") fgrnd=$((fgrnd + 60)) ;;
    "true") fgrnd=$((fgrnd + 60)) ;;
    esac

    case $bint in
    "bri") bgrnd=$((bgrnd + 60)) ;;
    "b") bgrnd=$((bgrnd + 60)) ;;
    "1") bgrnd=$((bgrnd + 60)) ;;
    "true") bgrnd=$((bgrnd + 60)) ;;
    esac

    if [[ $bgrnd -ge 100 ]] ; then
        case $bint in
        "dar") bgrnd=$((bgrnd - 60));;
        "d") bgrnd=$((bgrnd - 60));;
        "0") bgrnd=$((bgrnd - 60));;
        "false") bgrnd=$((bgrnd - 60));;
        esac
    fi

    local CFG_FILE="/tmp/echoNC.tmp"
    local new_config="${font};${fgrnd};${bgrnd}m"

    if [ "$persistent" == "true" ] ; then
        echo -en "\e[0m\e[${new_config}${text}"
    else
        echo -en "\e[0m\e[${new_config}${text}\e[0m"
    fi

    if [ "$store" == "store" ] ; then
        touch $CFG_FILE
        echo "$new_config" > $CFG_FILE
    elif [ "$store" == "restore" ] ; then
        touch $CFG_FILE
        old_config=$(cat "$CFG_FILE")
        [ ! -z "$old_config" ] && echo -en "\e[0m\e[${old_config}" || tput sgr0
    elif [ "$store" == "clear" ] ; then
        tput sgr0
    fi
}

function echoC() {
    echo "$(echoNC "$1" "${2}")"
}

# blue popup
function echoPop() {
    echo -e "\e[0m\e[94;1m${1}\e[0m"
}
# green console log
function echoLog() {
    echo -e "\e[0m\e[92;1m${1}\e[0m"
}
# light blue info
function echoInfo() {
    echo -e "\e[0m\e[36;1m${1}\e[0m"
}

function echoInfo() {
    echo -e "\e[0m\e[36;1m${1}\e[0m"
}
function echoWarn() {
    echo -e "\e[0m\e[33;1m${1}\e[0m"
}
function echoErr() {
    echo -e "\e[0m\e[31;1m${1}\e[0m"
}
function echoInf() {
    echoInfo "${1}"
}
function echoWarning() {
    echoWarn "${1}"
}
function echoError() {
    echoErr "${1}"
}

function echoNPop() {
    echo -en "\e[0m\e[94;1m${1}\e[0m"
}
function echoNLog() {
    echo -en "\e[0m\e[92;1m${1}\e[0m"
}
function echoNInfo() {
    echo -en "\e[0m\e[36;1m${1}\e[0m"
}
function echoNWarn() {
    echo -en "\e[0m\e[33;1m${1}\e[0m"
}
function echoNErr() {
    echo -en "\e[0m\e[31;1m${1}\e[0m"
}
function echoNInf() {
    echoNInfo "${1}"
}
function echoNWarning() {
    echoNWarn "${1}"
}
function echoNError() {
    echoNErr "${1}"
}

# echo command with a line number
function echol() {
    grep -n "$1" $0 |  sed "s/echo_line_no//" 
}

function getNLineBySubStr() {
    local INDEX=$1
    local SUBSTR=$2
    local FILE=$3
    INDEX="$((INDEX-1))"
    if ($(isNullOrWhitespaces "$SUBSTR")) || ($(isNullOrWhitespaces "$FILE")) || [ ! -f $FILE ] ; then echo "-1" ; else
        SUBSTR=${SUBSTR//"="/"\="}
        SUBSTR=${SUBSTR//"/"/"\/"}
        SUBSTR=${SUBSTR//"["/"\["}
        SUBSTR=${SUBSTR//"*"/"\*"}
        local lines=$(sed -n "/${SUBSTR}/=" $FILE)
        if ($(isNullOrWhitespaces "$lines")) ; then echo "-1" ; else
            local lineArr=($(echo $lines))
            local lineNr=${lineArr[$INDEX]}
            ($(isNaturalNumber "$lineNr")) && echo "$lineNr" || echo "-1"
        fi
    fi
}

# for now this funciton is only intended for env variables discovery
function getNLineByPrefix() {
    local INDEX=$1
    local PREFIX=$2
    local FILE=$3
    INDEX="$((INDEX-1))"
    if ($(isNullOrWhitespaces "$PREFIX")) || ($(isNullOrWhitespaces "$FILE")) || [ ! -f $FILE ] ; then echo "-1" ; else
        PREFIX=${PREFIX//"="/"\="}
        PREFIX=${PREFIX//"/"/"\/"}
        PREFIX=${PREFIX//"["/"\["}
        PREFIX=${PREFIX//"*"/"\*"}
        local lines=$(sed -n "/^[[:blank:]]*${PREFIX}/=" $FILE)
        if ($(isNullOrWhitespaces "$lines")) ; then echo "-1" ; else
            local lineArr=($(echo $lines))
            local lineNr=${lineArr[$INDEX]}
            ($(isNaturalNumber "$lineNr")) && echo "$lineNr" || echo "-1"
        fi
    fi
}

# getLastLineByPSubStr <prefix> <file>
function getLastLineByPSubStr() {
    getNLineBySubStr "0" "$1" "$2"
}

function getLastLineByPrefix() {
    getNLineByPrefix "0" "$1" "$2"
}

function getFirstLineBySubStr() {
    getNLineBySubStr "1" "$1" "$2"
}

function getFirstLineByPrefix() {
    getNLineByPrefix "1" "$1" "$2"
}

function setLineByNumber() {
    local INDEX=$1
    local TEXT=$2
    local FILE=$3
    [ ! -f "$FILE" ] && echoErr "ERROR: File '$FILE' does NOT exist, nothing can be set!"
    if [ -z "$TEXT" ] ; then
        # delete line if text is empty
        sed -i"" "${INDEX}d" $FILE
    else
        # set line if text is NOT eopty
        sed -i"" "$INDEX c\
$TEXT" $FILE
    fi
}

function setNLineBySubStr() {
    local INDEX=$1
    local SUBSTR=$2
    local TEXT=$3
    local FILE=$4
    local LINE=$(getNLineBySubStr "$INDEX" "$SUBSTR" "$FILE")
    if [[ $LINE -ge 0 ]] ; then
        setLineByNumber "$LINE" "$TEXT" "$FILE"
        echo "true"
    else
        echo "false"
    fi
}

function setNLineByPrefix() {
    local INDEX=$1
    local PREFIX=$2
    local TEXT=$3
    local FILE=$4
    local LINE=$(getNLineByPrefix "$INDEX" "$PREFIX" "$FILE")
    if [[ $LINE -ge 0 ]] ; then
        setLineByNumber "$LINE" "$TEXT" "$FILE"
        echo "true"
    else
        echo "false"
    fi
}

function setLastLineBySubStr() {
    setNLineBySubStr "0" "$1" "$2" "$3"
}

function setLastLineByPrefix() {
    setNLineByPrefix "0" "$1" "$2" "$3"
}

function setFirstLineBySubStr() {
    setNLineBySubStr "1" "$1" "$2" "$3"
}

function setFirstLineByPrefix() {
    setNLineByPrefix "1" "$1" "$2" "$3"
}

function setLastLineBySubStrOrAppend() {
    local SUBSTR=$1
    local TEXT=$2
    local FILE=$3
    [ ! -f "$FILE" ] && echoErr "ERROR: File '$FILE' does NOT exist, nothing can be set!"
    local ADDED=$(setLastLineBySubStr "$SUBSTR" "$TEXT" "$FILE")
    if [ "$ADDED" == "false" ] ; then
        echo "$TEXT" >> $FILE
    elif [ "$ADDED" != "true" ] ; then
        echoErr "ERROR: Failed to set line or apped to '$FILE'"
        return 1
    fi
}

function setLastLineByPrefixOrAppend() {
    local PREFIX=$1
    local TEXT=$2
    local FILE=$3
    [ ! -f "$FILE" ] && echoErr "ERROR: File '$FILE' does NOT exist, nothing can be set!"
    local ADDED=$(setLastLineByPrefix "$PREFIX" "$TEXT" "$FILE")
    if [ "$ADDED" == "false" ] ; then
        echo "$TEXT" >> $FILE
    elif [ "$ADDED" != "true" ] ; then
        echoErr "ERROR: Failed to set line or apped to '$FILE'"
        return 1
    fi
}

function getFirstLineByPrefixAfterPrefix() {
    local tag="$1"
    local prefix="$2"
    local file="$3"

    local result=0
    local index=0
    local min_line=0
    (! $(bu isNullOrWhitespaces "$tag")) && \
     min_line=$(bu getFirstLineByPrefix "$tag" "$file")

    if [[ $min_line -le -1 ]] ; then
        result="-1"
    else
        while [[ result -le min_line ]] ; do
            index="$((index+1))"
            result=$(bu getNLineByPrefix $index "$prefix" "$file")
            [[ $result -le -1 ]] && break
        done
    fi

    echo "$result"
}

# Gets var names by index, e.g. getTomlVarName 36 ./example.toml -> [<tag>] <name>
function getTomlVarName() {
    local index=$1
    local file=$2
    local tag="[base]"
    local name=""
    local cnt=0
    local line=""
    mapfile rows < $file
    for row in "${rows[@]}"; do
       line=$(echo "$row" | tr -d '\011\012\013\014\015\040')
       if [[ $line = \[*\] ]] ; then
           tag="$line"
           continue
       elif  [ -z "$line" ] || [[ $line = \#* ]] ; then
            continue
       elif [[ $line = *=* ]] ; then
           name=$(echo "$line" | cut -d= -f1 | xargs)
           if  [ ! -z "$name" ] ; then
               cnt="$((cnt+1))"
               [[ $cnt -eq $index ]] && echo "$tag $name" && break
           fi
       fi
    done
}

# getTomlVarNames ./example.toml
function getTomlVarNames() {
    local file=$1
    local tag="[base]"
    local name=""
    local result=""
    local cnt=0
    local line=""
    mapfile rows < $file
    for row in "${rows[@]}"; do
       line=$(echo "$row" | tr -d '\011\012\013\014\015\040')
       if [[ $line = \[*\] ]] ; then
           tag="$line"
           continue
       elif  [ -z "$line" ] || [[ $line = \#* ]] ; then 
            continue
       elif [[ $line = *=* ]] ; then
           name=$(echo "$line" | cut -d= -f1 | xargs)
           [ ! -z "$name" ] && echo "$tag $name"
       fi
    done
}

# setTomlVar <tag> <name> <value> <file>
function setTomlVar() {
    local VAR_TAG=$(echo "$1" | tr -d '\011\012\013\014\015\040\133\135' | xargs)
    local VAR_NAME=$(delWhitespaces "$2")
    local VAR_VALUE="$3"
    local VAR_FILE=$4

    [ ! -z "$VAR_TAG" ] && VAR_TAG="[${VAR_TAG}]"
    [ "$VAR_TAG" == "[base]" ] && echoWarn "WARNING: Base tag detected!" && VAR_TAG=""
    
    ([ -z "$VAR_FILE" ] || [ ! -f $VAR_FILE ]) && \
     echoErr "ERROR: File '$VAR_FILE' does NOT exist, can't upsert '$VAR_NAME' variable" && return 1
    
    local MIN_LINE_NR=$(getFirstLineByPrefixAfterPrefix "" "$VAR_TAG" "$VAR_FILE")
    local LINE_NR=$(getFirstLineByPrefixAfterPrefix "$VAR_TAG" "$VAR_NAME =" "$VAR_FILE")
    local MAX_LINE_NR=$(getFirstLineByPrefixAfterPrefix "$VAR_TAG" "[" "$VAR_FILE")
    ( [[ $LINE_NR -le 0 ]] || ( [[ $MAX_LINE_NR -gt 0 ]] && [[ $LINE_NR -ge $MAX_LINE_NR ]] ) ) && \
     echoErr "ERROR: File '$VAR_FILE' does NOT contain a variable name '$VAR_NAME' occuring afer the tag '$VAR_TAG' (line $MIN_LINE_NR), but before the next tag (line $MAX_LINE_NR)" && \
     LINE_NR=-1 && return 1

    if [ ! -z "$VAR_NAME" ] && [ -f $VAR_FILE ] && [ $LINE_NR -ge 1 ] ; then
        
        if ($(isNullOrWhitespaces "$VAR_VALUE")) ; then
            echoWarn "WARNING: Brackets will be added, value '$VAR_VALUE' is empty or a seq. of whitespaces"
            VAR_VALUE="\"$VAR_VALUE\""
        elif ( ($(strStartsWith "$VAR_VALUE" "\"")) && ($(strEndsWith "$VAR_VALUE" "\"")) ) ; then
            : # nothing to do, quotes already present
        elif ( (! $(strStartsWith "$VAR_VALUE" "[")) || (! $(strEndsWith "$VAR_VALUE" "]")) ) ; then
            if  ($(isSubStr "$VAR_VALUE" " ")) ; then
                echoWarn "WARNING: Brackets will be added, value '$VAR_VALUE' contains whitespaces"
                VAR_VALUE="\"$VAR_VALUE\""
            elif ( (! $(isBoolean "$VAR_VALUE")) && (! $(isNumber "$VAR_VALUE")) ) ; then
                echoWarn "WARNING: Brackets will be added, value '$VAR_VALUE' is neither a number or boolean"
                VAR_VALUE="\"$VAR_VALUE\""       
            fi
        fi

        echoInfo "INFO: Updating '$VAR_TAG' '$VAR_NAME' with value '$VAR_VALUE' in the file '$VAR_FILE' at line '$LINE_NR'"
        setLineByNumber "$LINE_NR" "$VAR_NAME = $VAR_VALUE" "$VAR_FILE"
        return 0
    else
        echoErr "ERROR: Failed to set variable '$VAR_NAME' in '$VAR_FILE'"
        return 1
    fi
}

# reads last variable occurance from a file
# getVar "PATH" /etc/profile
function getVar() {
    local VAR_NAME="$(delWhitespaces "$1")"
    local VAR_FILE="$2"
    if [ ! -z "$VAR_NAME" ] && [ -f $VAR_FILE ] ; then
        local LINE_NR=$(getLastLineByPrefix "${VAR_NAME}=" "$VAR_FILE" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && LINE_NR=$(getLastLineByPrefix "export ${VAR_NAME}=" "$VAR_FILE" 2> /dev/null || echo "-1")

        if [[ $LINE_NR -ge 0 ]] ; then
            local line=$(sed "${LINE_NR}q;d" $VAR_FILE)
            line="$( cut -d '=' -f 2- <<< "$line" )"

            if ($(strStartsWith "$line" "\"")) && ($(strEndsWith "$line" "\"")) && ($(isSubStr "$line" " ")) ; then
                line=$(sed -e 's/^"//' -e 's/"$//' <<<"$line")
            fi
            echo "$line"
            return 0
        fi
    fi

    return 1
}

function tryGetVar() {
    getVar "$1" "$2" 2> /dev/null || echo ""
} 

# setVar <name> <value> <file>
function setVar() {
    local VAR_NAME=$(delWhitespaces "$1")
    local VAR_VALUE=$2
    local VAR_FILE=$3
    
    ([ -z "$VAR_FILE" ] || [ ! -f $VAR_FILE ]) && echoErr "ERROR: File '$VAR_FILE' does NOT exist, can't usert '$VAR_NAME' variable"
    
    if [ ! -z "$VAR_NAME" ] && [ -f $VAR_FILE ] ; then
        local LINE_NR=$(getLastLineByPrefix "${VAR_NAME}=" "$VAR_FILE" 2> /dev/null || echo "-1")

        # add quotes if string has any whitespaces
        echoInfo "INFO: Appending var '$VAR_NAME' with value '$VAR_VALUE' to file '$VAR_FILE'"
        if [ -z "$VAR_VALUE" ] || [[ "$VAR_VALUE" = *" "* ]] ; then
            echo "${VAR_NAME}=\"${VAR_VALUE}\"" >> $VAR_FILE
        else
            echo "${VAR_NAME}=${VAR_VALUE}" >> $VAR_FILE
        fi

        if [[ $LINE_NR -ge 0 ]] ; then
            echoWarn "WARNING: Wiped old var '$VAR_NAME' at line '$LINE_NR' in the file '$VAR_FILE'"
            sed -i"" "${LINE_NR}d" $VAR_FILE
        fi
        return 0
    else
        echoErr "ERROR: Failed to set environment variable '$VAR_NAME' in '$VAR_FILE'"
        return 1
    fi
}

function trySetVar() {
    setVar "$1" "$2" "$3" 2> /dev/null || :
} 

function setEnv() {
    local ENV_NAME=$(delWhitespaces "$1")
    local ENV_VALUE=$2
    local ENV_FILE=$3 && ([ -z "$ENV_FILE" ] || [ ! -f $ENV_FILE ]) && ENV_FILE="/etc/profile"
    
    if [ ! -z "$ENV_NAME" ] && [ -f $ENV_FILE ] ; then
        local LINE_NR=$(getLastLineByPrefix "${ENV_NAME}=" "$ENV_FILE" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && LINE_NR=$(getLastLineByPrefix "export ${ENV_NAME}=" "$ENV_FILE" 2> /dev/null || echo "-1")

        # add quotes if string has any whitespaces
        echoInfo "INFO: Appending env '$ENV_NAME' with value '$ENV_VALUE' to file '$ENV_FILE'"
        if [ -z "$ENV_VALUE" ] || [[ "$ENV_VALUE" = *" "* ]] ; then
            echo "export ${ENV_NAME}=\"${ENV_VALUE}\"" >> $ENV_FILE
        else
            echo "export ${ENV_NAME}=${ENV_VALUE}" >> $ENV_FILE
        fi

        if [[ $LINE_NR -ge 0 ]] ; then
            echoWarn "WARNING: Wiped old env '$ENV_NAME' at line '$LINE_NR' in the file '$ENV_FILE'"
            sed -i"" "${LINE_NR}d" $ENV_FILE
        fi
        return 0
    else
        echoErr "ERROR: Failed to set environment variable '$ENV_NAME' in '$ENV_FILE'"
        return 1
    fi
}

function setGlobEnv() {
    local ENV_NAME=$1
    local ENV_VALUE=$2
    local GLOB_SRC="source /etc/profile"
    local SUDOUSER="${SUDO_USER}" 
    local USERNAME="${USER}" 
    local LOGNAME=$(logname 2> /dev/null echo "")
    [ "$SUDOUSER" == "root" ] && SUDOUSER=""
    [ "$USERNAME" == "root" ] && USERNAME=""
    [ "$LOGNAME" == "root" ] && LOGNAME=""

    local TARGET="/$LOGNAME/.bashrc"
    if [ ! -z "$LOGNAME" ] && [ -f  $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="/$USERNAME/.bashrc"
    if [ ! -z "$USERNAME" ] && [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="/$SUDOUSER/.bashrc"
    if [ ! -z "$SUDOUSER" ] && [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="/root/.bashrc"
    if [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="~/.zshrc"
    if [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="~/.bashrc"
    if [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    TARGET="~/.profile"
    if [ -f $TARGET ] ; then
        local LINE_NR=$(getLastLineByPrefix "$GLOB_SRC" "$TARGET" 2> /dev/null || echo "-1")
        [[ $LINE_NR -lt 0 ]] && ( echo $GLOB_SRC >> $TARGET || echoErr "ERROR: Failed to append global env source file to '$TARGET'" )
    fi

    setEnv "$ENV_NAME" "$ENV_VALUE" "/etc/profile"
}

function setGlobPath() {
    local VAL="$1"
    GLOBENV_SRC=/etc/profile

    ($(isNullOrEmpty "$VAL")) && echoWarn "WARNING: Value is undefined, no need to append anything to PATH at '$GLOBENV_SRC"
    
    local LINE_NR=$(getLastLineByPrefix "PATH=" "$GLOBENV_SRC" 2> /dev/null || echo "-1")
    [[ $LINE_NR -lt 0 ]] && LINE_NR=$(getLastLineByPrefix "export PATH=" "$GLOBENV_SRC" 2> /dev/null || echo "-1")

    if [[ $LINE_NR -lt 0 ]] ; then
        echoInfo "INFO: Global PATH variable was NOT fount at '$GLOBENV_SRC', appending..."
        echo "export PATH=\"\$PATH\"" >> $GLOBENV_SRC
    fi

    local EXPORT_PREFIX="false" && LINE_NR=$(getLastLineByPrefix "PATH=" "$GLOBENV_SRC" 2> /dev/null || echo "-1")
    [[ $LINE_NR -lt 0 ]] && LINE_NR=$(getLastLineByPrefix "export PATH=" "$GLOBENV_SRC" 2> /dev/null || echo "-1") && EXPORT_PREFIX="true"
    [[ $LINE_NR -lt 0 ]] && echoErr "ERROR: Failed to locate PATH variable at '$GLOBENV_SRC'" && return 1

    PATH_CONTENT=$(sed "${LINE_NR}q;d" "$GLOBENV_SRC")
    # remove quotes and variable key prefix
    [ "${EXPORT_PREFIX}" == "false" ] && PATH_CONTENT=$(echo ${PATH_CONTENT#"PATH="} | tr -d '"')
    [ "${EXPORT_PREFIX}" == "true" ] && PATH_CONTENT=$(echo ${PATH_CONTENT#"export PATH="} | tr -d '"')

    if ($(isSubStr "$PATH_CONTENT" "$VAL")); then
        echoWarn "WARNING: PATH already contains value '$VAL', nothing to append"
    else
        PATH_CONTENT="${PATH_CONTENT}:$VAL"
    fi

    setGlobEnv "PATH" "$PATH_CONTENT"
}

# set or update global line of text by prefix
# setGlobLine "mount -t drvfs C:" "mount -t drvfs C: /mnt/c"
function setGlobLine() {
    local PREFIX="$1"
    local VALUE="$2"
    GLOBENV_SRC=/etc/profile

    ($(isNullOrEmpty "$PREFIX")) && echoErr "ERROR: Prefix was undefined, there is nothing to append to '$GLOBENV_SRC" && return 1
    
    local LINE_NR=$(getLastLineByPrefix "$PREFIX" "$GLOBENV_SRC" 2> /dev/null || echo "-1")
    if [[ $LINE_NR -lt 0 ]] ; then
        echoWarn "WARNING: Global line was NOT fount at '$GLOBENV_SRC'"
        echoInfo "INFO: Appending '$VALUE' to the file '$GLOBENV_SRC'"
        echo "$VALUE" >> $GLOBENV_SRC
        return 0
    fi

    echoWarn "WARNING: Wiped old line '$LINE_NR' in the file '$GLOBENV_SRC'"
    sed -i"" "${LINE_NR}d" $GLOBENV_SRC
    
    if ($(isNullOrEmpty "$VALUE")) ; then
        echoInfo "INFO: There was nothing defined to append to the file '$GLOBENV_SRC'"
    else
        echoInfo "INFO: Appending '$VALUE' to the file '$GLOBENV_SRC'"
        echo "$VALUE" >> $GLOBENV_SRC
    fi
}

function loadGlobEnvs() {
    . /etc/profile
}

# crossenvLink "$KIRA_BIN/CDHelper-<arch>/CDHelper" "/usr/local/bin/CDhelper"
# NOTE: the <arch> tag will be replaced by arm64 & amd64
function crossenvLink() {
    local SOURCE_PATH=$1
    local DESTINATION_PATH=$2

    local FULL_SRC_PATH_ARM64="${SOURCE_PATH/<arch>/arm64}"
    local FULL_SRC_PATH_AMD64="${SOURCE_PATH/<arch>/amd64}"

    if [ -f $FULL_SRC_PATH_ARM64 ] && [ -f $FULL_SRC_PATH_AMD64 ] ; then
        cat > $DESTINATION_PATH << EOL
#!/usr/bin/env bash
set -e

if [[ "\$(uname -m)" == *"arm"* ]] || [[ "\$(uname -m)" == *"aarch"* ]] ; then
    if [ -z "$@" ] ; then
        $FULL_SRC_PATH_ARM64
    else
        $FULL_SRC_PATH_ARM64 "\$@"
    fi
else
    if [ -z "$@" ] ; then
        $FULL_SRC_PATH_AMD64
    else
        $FULL_SRC_PATH_AMD64 "\$@"
    fi
fi
EOL
        chmod -v 555 "$DESTINATION_PATH" "$FULL_SRC_PATH_AMD64" "$FULL_SRC_PATH_ARM64"
    else
        [ ! -f $FULL_SRC_PATH_ARM64 ] && echoErr "ERROR: Could NOT find arm64 relese: '$FULL_SRC_PATH_ARM64'" 
        [ ! -f $FULL_SRC_PATH_AMD64 ] && echoErr "ERROR: Could NOT find amd64 relese: '$FULL_SRC_PATH_AMD64'"
        return 1
    fi
}

# releases file from process capturing it
# fileProcUnlock "/var/lib/dpkg/lock-frontend"
function fileProcUnlock {
  local file="$1"
  [ ! -f "$file" ] && echoWarn "WARNING: File '$file' was NOT found, no need to unlock" && return 0
  pid=$(lslocks | grep "$file" | awk '{print $1}' || echo "")
  if [ -n "$pid" ]; then
    echoInfo "INFO: Releasing lock from file '$file' held by process $pid."
    kill $pid || echoWarn "WARNINIG: Failed to kill process '$pid'"
  else
    echoInfo "INFO: File '$file' was already unlocked."
  fi
}

# fileFollow /home/asmodat/logs/kirascan.log
fileFollow() {
    local file="$1"
    local quit_key="q"
    local pid=0

    function fileFollowInt {
        echoNC "bli;whi" "\n$(strFixC "~~~ To exit press [Q] ~~~" 80)\n\n" && sleep 2
    }

    function fileFollowErr {
        kill -SIGINT $pid &> /dev/null || :
        kill $pid &> /dev/null || :
        kill -9 $pid &> /dev/null || :
        trap - INT || :
        trap - ERR || :
    }

    echoNC "bli;whi" "\n$(strFixC "~~~ Oppening '$file', to exit press [Q] ~~~" 80)\n\n" && sleep 3

    if (! $(isFileEmpty "$file")) ; then
        trap fileFollowInt INT
        trap fileFollowErr ERR
        tail -n 2147483646 -f "$file" &
        pid=$!

        pressToContinue "q"
        fileFollowErr
    else
        echoNC "bli;red" "\n$(strFixC "~~~ File '$file' is empty or does NOT exist ~~~" 80)\n\n" && sleep 1
    fi
}

# cmdFollow "docker logs --follow --details --timestamps ca862e8335cf8f1e163ecaef231994080d61b07ecd496ebf29927a0d05f3b668"
cmdFollow() {
    local cmd="$1"
    local quit_key="q"
    local pid1=0

    function cmdFollowInt {
        echoNC "bli;whi" "\n$(strFixC "~~~ To exit process '$pid1' press [Q] ~~~" 80)\n\n" && sleep 2
    }

    function cmdFollowErr {
        kill -SIGINT $pid1 &> /dev/null || :
        kill $pid1 &> /dev/null || :
        kill -9 $pid1 &> /dev/null || :
        trap - INT || :
        trap - ERR || :
    }

    echoNC "bli;whi" "\n$(strFixC "~~~ Starting command '$cmd', to exit press [Q] ~~~" 80)\n\n" && sleep 3

    if (! $(isNullOrWhitespaces $cmd)) ; then
        trap cmdFollowInt INT
        trap cmdFollowInt ERR
        bash -c ". /etc/profile && $cmd" &
        pid1=$!

        pressToContinue "q"
        cmdFollowErr
    else
        echoNC "bli;red" "\n$(strFixC "~~~ Command is invalid or was not specified ~~~" 80)\n\n" && sleep 1
    fi
}

# allow to execute finctions directly from file
if declare -f "$1" > /dev/null ; then
  # call arguments verbatim
  "$@"
fi