A Bash shell function to save your fingers from typing "awk '{ print $5 }'" all the time
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# Inspiration: http://serverfault.com/a/5551 (but basically rewritten) | |
function fawk() { | |
USAGE="\ | |
usage: fawk [<awk_args>] <field_no> | |
Ex: getent passwd | grep andy | fawk -F: 5 | |
" | |
if [ $# -eq 0 ]; then | |
echo -e "$USAGE" >&2 | |
return | |
#exit 1 # whoops! that would quit the shell! | |
fi | |
# bail if the *last* argument isn't a number (source: | |
# http://stackoverflow.com/a/808740) | |
last=${@:(-1)} | |
if ! [ $last -eq $last ] &>/dev/null; then | |
echo "FAWK! Last argument (awk field) must be numeric." >&2 | |
echo -e "$USAGE" >&2; | |
return | |
fi | |
if [ $# -gt 1 ]; then | |
# Source: | |
# http://www.cyberciti.biz/faq/linux-unix-bsd-apple-osx-bash-get-last-argument/ | |
rest=${@:1:$(( $# - 1 ))} | |
else | |
rest='' # just to be sure | |
fi | |
awk $rest "{ print \$$last }" | |
} # fawk |
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