while-read-do-cd

#!/bin/bash
set -euf -o pipefail
out () { printf %s\\n "$*" ; }

##
# For each line of input on command line, cd into a path then run a command.
#
# Contact: Joel Parker Henderson (joel@joelparkerhenderson.com)
# License: GPL
# Updated: 2015-12-22
##

unset CDPATH
while read path
do
  out "=== $path"
  cd $path
  $1
  cd -
done