Ubuntu's /etc/init.d/bitcoin script to run a bitcoin node as daemon/service

bitcoin

#!/bin/sh
### BEGIN INIT INFO
# Provides:          bitcoin
# 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:       Bitcoin Fullnode
### END INIT INFO

DATA_DIR=/mnt/volume-nyc1-01/.bitcoin

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Bitcoin Full node"
NAME=bitcoind
DAEMON=/usr/bin/bitcoind
DAEMON_OPTS="-conf=$DATA_DIR/bitcoin.conf -datadir=$DATA_DIR -txindex -daemon"
PIDFILE=/var/run/$NAME.pid
LOGFILE=/var/log/bitcoin.log
SCRIPTNAME=/etc/init.d/bitcoin
USER=bitcoin


# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

# Read configuration variable file if it is present
#[ -r /etc/default/$DESC ] && . /etc/default/$DESC

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
VERBOSE=yes

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions



do_stop() {
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME

	RETVAL="$?"

	[ "$RETVAL" = 2 ] && return 2
	# Wait for children to finish too if this is a daemon that forks
	# and if the daemon is only ever run from this initscript.
	# If the above conditions are not satisfied then add some other code
	# that waits for the process to drop all resources that could be
	# needed by services started subsequently.  A last resort is to
	# sleep for some time.
	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON

	[ "$?" = 2 ] && return 2
	# Many daemons don't delete their pidfiles when they exit.
	rm -f $PIDFILE
	return "$RETVAL"
}

do_start() {
# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --chuid $USER --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null || return 1
	start-stop-daemon --chuid $USER --start --make-pidfile --pidfile $PIDFILE --exec $DAEMON -- $DAEMON_OPTS || return 2

}


case "$1" in
  start)
    [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME"
    do_start
    case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
  ;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2
	#echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac