miner

#!/bin/sh
### BEGIN INIT INFO
# Provides:          Miner
# Required-Start:    $local_fs $network $named $time $syslog
# Required-Stop:     $local_fs $network $named $time $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Description:       Mining service
### END INIT INFO

SCRIPT=/opt/mining/mine-eth-ethminer.sh
RUNAS=root
NAME=miner

PIDFILE=/var/run/$NAME.pid
LOGFILE=/var/log/$NAME.log

start() {
	if [ -f "$PIDFILE" ] && kill -0 $(cat "$PIDFILE"); then
		echo 'Service already running' >&2
		return 1
	fi
	echo 'Starting service…' >&2
	local CMD="$SCRIPT &> \"$LOGFILE\" & echo \$!"
	su -c "$CMD" $RUNAS > "$PIDFILE"
	echo 'Service started' >&2
}

stop() {
	if [ ! -f "$PIDFILE" ] || ! kill -0 $(cat "$PIDFILE"); then
		echo 'Service not running' >&2
    if [ -f "$PIDFILE" ] ; then rm "$PIDFILE"; fi
		return 1
	fi
	echo 'Stopping service…' >&2
  pkill -P $(cat "$PIDFILE") && rm -f "$PIDFILE"
	echo 'Service stopped' >&2
}

uninstall() {
	echo -n "Are you really sure you want to uninstall this service?
    That cannot be undone. [y|N] "
	local SURE
	read SURE
	if [ "$SURE" = "y" ]; then
		stop
		rm -f "$PIDFILE"
		echo "Notice: log file will not be removed: '$LOGFILE'" >&2
		update-rc.d -f <NAME> remove
		rm -fv "$0"
	fi
}

case "$1" in
	start)
		start
		;;
	stop)
		stop
		;;
	uninstall)
		uninstall
		;;
	retart)
		stop
		start
		;;
	*)
		echo "Usage: $0 {start|stop|restart|uninstall}"
esac