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#!/bin/bash
function idle {
prog="$1"
while pgrep "$prog" >/dev/null 2>&1; do
sleep 3
done
shutdown -hP now
}
usage="Usage: $0 [-d] [-p PROCESS]"
function printhelp {
echo "A small shellscript which shutdowns your computer when a specific process ends"
echo $usage
echo "-d daemonize into the background"
echo "-p PROCESS commit the process name for which we are waiting to finish"
exit
}
prog=""
daemon=false
while [ $# -gt 0 ]; do
if [ "$1" == "-p" ]; then
shift
prog="$1"
shift
elif [ "$1" == "-d" ]; then
daemon=true
shift
elif [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
printhelp
else
echo "Unsupported argument '$1'. Try '-h' for more help." 1>&2
exit 1
fi
done
if [ -z "$prog" ] || [ "$prog" == "" ]; then
echo "I'm confused. Which programm shall I monitor? Tell me, master!" 1>&2
echo $usage
exit 1
fi
if [ $UID != 0 ]; then
read -p "We aren't root! Are you sure you have the proper permissions? If yes, press any key to continue or CTRL+C to abort. " null
fi
if [ $daemon == true ]; then
echo "Daemonizing..."
idle "$prog" >/dev/null 2>&1 &
disown
else
idle "$prog" >/dev/null 2>&1
fi
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