CentOS / RedHat LSB init script for nullmailer MTA

_etc_init.d_nullmailer

#!/bin/bash
#
# nullmailer MTA
#
# chkconfig: - 85 15
# description: nullmailer centos init @iceburg_net
### BEGIN INIT INFO
# Provides:          smtpdaemon
# Required-Start: $local_fs $network
# Required-Stop: $local_fs $network
# Default-Start:  2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: 
# Description:       
### END INIT INFO


# Source function library.
. /etc/init.d/functions

RETVAL=0

prog=nullmailer
exec=/usr/sbin/nullmailer-send
lockfile=/var/lock/subsys/$prog

run_as=nullmail
logfile=/var/log/nullmailer/nullmailer.log

# Source config
if [ -f /etc/sysconfig/$prog ] ; then
    . /etc/sysconfig/$prog
fi


start() {
        [ -x $exec ] || exit 5
        
        echo -n "Starting $prog: "
        
        PIDS=`pidof -c $exec`
        if [ -z "$PIDS" ]; then

          # modified to use a double-fork technique in absence of start-stop-daemon...
          runuser -s /bin/bash $run_as -c "((exec $exec >> $logfile 2>&1)&)"
          RETVAL=$?
        else
          echo -n "$prog is already running"
          RETVAL=1
        fi
        
        [ $RETVAL -eq 0 ] && touch $lockfile && success || failure
        echo
        return $RETVAL
}

stop() {
        echo -n "Stopping $prog: "
        
        PIDS=`pidof -c $exec`
        if [ -n "$PIDS" ]; then
          killall $exec
          return $?
        else
          echo -n "$prog is not running"
          RETVAL=1
        fi
        
        [ $RETVAL -eq 0 ] && rm -f $lockfile && success || failure
        echo
        return $RETVAL
}

status() {
        echo -n "status not supported "
        return 0
}

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

exit $?