start-stop-daemon-example

start-stop-daemon-example.sh

#!/bin/bash

# Quick start-stop-daemon example, derived from Debian /etc/init.d/ssh
set -e

NAME=app
DIR=/home/username/app/bin
PIDFILE=/var/run/$NAME.pid
DAEMON=/home/username/app/bin/executable
DAEMON_ARGS="-foo bar"
USER=username
LOG=/var/log/$NAME.log

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

case "$1" in
  start)
        echo -n "Starting daemon: "$NAME
        start-stop-daemon --start --quiet --chdir $DIR --chuid $USER --make-pidfile --pidfile $PIDFILE \
        --background --startas /bin/bash -- -c "exec $DAEMON $DAEMON_ARGS > $LOG 2>&1"
        echo "."
        ;;
  stop)
        echo -n "Stopping daemon: "$NAME
        start-stop-daemon --stop --quiet --chuid $USER --oknodo --remove-pidfile --pidfile $PIDFILE
        echo "."
        ;;
  restart)
        echo -n "Restarting daemon: "$NAME
        start-stop-daemon --stop --quiet --chuid $USER --oknodo --retry 30 --remove-pidfile --pidfile $PIDFILE
        start-stop-daemon --start --quiet --chdir $DIR --chuid $USER --make-pidfile --pidfile $PIDFILE \
        --background --startas /bin/bash -- -c "exec $DAEMON $DAEMON_ARGS > $LOG 2>&1"
        echo "."
        ;;

  *)
        echo "Usage: "$1" {start|stop|restart}"
        exit 1
esac

exit 0