Show only existing executable dirs in PATH using only builtin bash commands

for p in ${PATH//:/ }; do [[ -d $p && -x $p ]] && echo $p; done
Finds executable and existing directories in your path that can be useful if migrating a profile script to another system. This is faster and smaller than any other method due to using only bash builtin commands. See also: + http://www.commandlinefu.com/commands/view/743/list-all-execs-in-path-usefull-for-grepping-the-resulting-list + http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html
Sample Output
~/askapache/bin
~/askapache/sbin
/bin
/etc
/sbin
/usr/X11R6/bin
/usr/bin
/usr/bin/mh
/usr/libexec
/usr/local/bin
/usr/sbin
/etc/X11
/etc/X11/xinit
~/askapache/ruby/bin
/usr/local/dh/apache/template/bin
/usr/local/dh/apache2/template/bin
/usr/local/dh/apache2/template/build
/usr/local/dh/apache2/template/sbin
/usr/local/dh/bin
/usr/local/dh/java/bin
/usr/local/dh/java/jre/bin
/usr/local/php5/bin
.

What Others Think

I've been using it like GP=; for p in ${PATH//:/ }; do [[ -d $p && -x $p ]] && [[ "${GP}s" == s ]] && GP=$p || GP=${GP}:$p; done; export PATH=$GP
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Perfecthomepugs · 4 weeks ago

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