executioner

#!/bin/bash
##############################################################################
# executioner
# -----------
# Run process $2 for $1 seconds and then kill the process.
#
# :authors: Isis Agora Lovecruft, 0xa3adb67a2cdb8b35
# :date: 21 April 2013
# :version: 0.0.2
##############################################################################

set -vx --

function killitwithfire () {
    trap - ALRM
    kill -ALRM $prog 2>/dev/null
    kill -9 $! 2>/dev/null && exit 0
}

function waitforit () {
    trap "killitwithfire" ALRM
    sleep $1& wait
    kill -ALRM $$
}

waitforit $1& prog=$! ; shift ;
trap "killitwithfire" ALRM INT
"$@"& wait $!
RET=$?
if [[ "$(ps -ef | awk -v pid=$prog '$2==pid{print}{}')" != "" ]]; then
    kill -ALRM $prog
    wait $prog
fi
exit $RET