An example of how to create a init.d script in Debian, using dependency booting. #debian #init.d #lsb-script #startup-script

README-create-debian-startup-script.md

The following is mostly taken from the example published at https://mkaz.com/2013/07/03/run-script-at-start-on-debian/

Write an init.d script according to the the dependency-booting specification (see at https://wiki.debian.org/LSBInitScripts). , say it foo.sh. Place the script under /etc/init.d.

ln -s /root/scripts/foo.sh /etc/init.d/foo 

Update the runlevel directories under /etc/rc*:

update-rc.d foo defaults

foo.sh

#! /bin/bash

### BEGIN INIT INFO
# Provides:          foo
# Required-Start:    $local_fs $network
# Required-Stop:     $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: foo service
# Description:       Run Foo service
### END INIT INFO

# Carry out specific functions when asked to by the system
case "$1" in
  start)
    echo "Starting Foo..."
    sudo -u foo-user bash -c 'cd /path/to/scripts/ && ./start-foo.sh'
    ;;
  stop)
    echo "Stopping Foo..."
    sudo -u foo-user bash -c 'cd /path/to/scripts/ && ./stop-foo.sh'
    sleep 2
    ;;
  *)
    echo "Usage: /etc/init.d/foo {start|stop}"
    exit 1
    ;;
esac

exit 0