Generic sysv init

myservice

#!/bin/bash

service_name=`basename $0`

# Load default variables. Provides a way to configure the service
# differently in different environments.
if [ -f /etc/default/${service_name} ]; then
  source /etc/default/${service_name}
fi

# -----------------------------------------------------------------------------
# The following are configurable options that can be changed locally by
# setting them in /etc/default/$service_name

# The path to the service script
progpath=${progpath:-'/usr/local/bin/yourscript.sh'}

# Who to run the sync as. This user should be able to ssh passwordless to
# the destination machine
runas=${runas:-'root'}

# arguments to script
opts=${opts:-''}


# -----------------------------------------------------------------------------
# Should not need to change anything below here

# binary program name
prog=$(basename $progpath)

# program name without extension
prog_name="${prog%.*}"

# pid file
pidfile="/var/run/${prog_name}.pid"

# log file for program
logdir=/var/log/${prog_name}
logfile=${logdir}/${prog_name}.log
mkdir -p $logdir
chown -R $runas $logdir

# make sure full path to executable binary is found
! [ -x $progpath ] && echo "$progpath: executable not found" && exit 1

eval_cmd() {
  local rc=$1
  if [ $rc -eq 0 ]; then
    echo '[  OK  ]'
  else
    echo '[FAILED]'
  fi
  return $rc
}

start() {
  # see if running
  local pids=$(pidof -x $prog)

  if [ -n "$pids" ]; then
    echo "$prog (pid $pids) is already running"
    return 0
  fi
  printf "%-50s%s" "Starting $prog: " ''
  su - $runas -c "$progpath $opts" &> ${logfile} &

  # save pid to file
  echo $! > $pidfile

  # check again if running
  sleep 1
  pidof -x $prog >/dev/null 2>&1
  eval_cmd $?
}

stop() {
  # see if running
  local pids=$(pidof -x $prog)

  if [ -z "$pids" ]; then
    echo "$prog not running"
    return 0
  fi
  printf "%-50s%s" "Stopping $prog: " ''
  rm -f $pidfile
  kill -9 $pids
  eval_cmd $?
}

status() {
  # see if running
  local pids=$(pidof -x $prog)

  if [ -n "$pids" ]; then
    echo "$prog (pid $pids) is running"
  else
    echo "$prog is stopped"
  fi
}

case $1 in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
    status
    ;;
  restart)
    stop
    sleep 1
    start
    ;;
  *)
    echo "Usage: $0 {start|stop|status|restart}"
    exit 1
esac

exit $?