Created
December 17, 2020 00:34
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#!/bin/bash | |
#based off: https://gist.github.com/naholyr/4275302 | |
set -e | |
template=$'#!/bin/sh\n### BEGIN INIT INFO\n# Provides: <NAME>\n# Required-Start: $local_fs $remote_fs $network $named $time $syslog\n# Required-Stop: $local_fs $remote_fs $network $named $time $syslog\n# Default-Start: 2 3 4 5\n# Default-Stop: 0 1 6\n# Description: <DESCRIPTION>\n### END INIT INFO\n\nSCRIPT=<COMMAND>\nRUNAS=<USERNAME>\n\nPIDFILE=/var/run/<NAME>.pid\nLOGFILE=/var/log/<NAME>.log\n\nstart() {\n if [ -f /var/run/$PIDNAME ] && kill -0 $(cat /var/run/$PIDNAME); then\n echo \'Service already running\' >&2\n return 1\n fi\n echo \'Starting service…\' >&2\n local CMD="$SCRIPT &> \\"$LOGFILE\\" & echo \\$!"\n su -c "$CMD" $RUNAS > "$PIDFILE"\n echo \'Service started\' >&2\n}\n\nstop() {\n if [ ! -f "$PIDFILE" ] || ! kill -0 $(cat "$PIDFILE"); then\n echo \'Service not running\' >&2\n return 1\n fi\n echo \'Stopping service…\' >&2\n pkill -P $(cat "$PIDFILE") && rm -f "$PIDFILE"\n echo \'Service stopped\' >&2\n}\n\nuninstall() {\n echo -n "Are you really sure you want to uninstall this service? That cannot be undone. [yes|No] "\n local SURE\n read SURE\n if [ "$SURE" = "yes" ]; then\n stop\n rm -f "$PIDFILE"\n echo "Notice: log file is not be removed: \'$LOGFILE\'" >&2\n update-rc.d -f <NAME> remove\n rm -fv "$0"\n fi\n}\n\ncase "$1" in\n start)\n start\n ;;\n stop)\n stop\n ;;\n uninstall)\n uninstall\n ;;\n restart)\n stop\n start\n ;;\n *)\n echo "Usage: $0 {start|stop|restart|uninstall}"\nesac' | |
#verify | |
if [ -z ${name+x} ] || [ -z ${username+x} ] || [ -z ${command+x} ]; then | |
echo "Error: All parameters need to be set" | |
exit 1 | |
fi | |
if [ -f "/etc/init.d/$name" ]; then | |
echo "Error: Service '$name' already exists" | |
exit 1 | |
fi | |
if ! id -u "$username" &> /dev/null; then | |
echo "Error: User '$username' not found" | |
exit 1 | |
fi | |
#fill in template | |
template="${template//<NAME>/$name}" | |
template="${template//<USERNAME>/$username}" | |
template="${template//<DESCRIPTION>/${description:-foo}}" | |
template="${template//<COMMAND>/$(printf %q "$command")}" | |
#install | |
echo -e "$template" > "/etc/init.d/$name" | |
chmod +x "/etc/init.d/$name" | |
touch "/var/log/$name.log" | |
chown "$username" "/var/log/$name.log" | |
update-rc.d "$name" defaults | |
service "$name" start |
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