redmine start/stop/status using unicorn web server

redmine_unicorn.sh

#!/bin/sh

export RAILS_ENV=production
USER=`whoami`

PIDS=""
getpids() {
    local procname=$1
    if [ "$#" = 0 ] ; then
        echo $"Usage: getpids {procname} "
        return
    fi

    PIDS=`ps -eaf|grep unicorn|grep ${procname}|grep -v grep|grep ${USER}|awk '{print $2}'|paste -d" " -s`
}

start() {
        bundle exec unicorn_rails -D -c config/unicorn.rb
        RETVAL=$?
        if [ $RETVAL != 0 ];then
                tail log/unicorn.stderr.log
        fi
}
stop() {
        getpids "master"
        if [ ! -z ${PIDS} ];then
                echo "sending TERM signal to unicorn master ${PIDS}"
                kill -TERM ${PIDS}
        fi
}

status() {
        getpids "master"
        if [ "x"${PIDS} = "x" ];then
                echo "unicorn redmine not running.."
                exit 0
        fi
        MASTER=${PIDS}
        getpids "worker"
        WORKER=${PIDS}
        echo "Unicorn master $MASTER and worker ($WORKER) is running..."
}

case "$1" in
  start)
        start
        status
        ;;
  stop)
        stop
        ;;
  about)
        ruby script/about
        ;;
  status)
        status
        ;;
  restart)
        stop
        start
        status
        ;;
  *)
        echo $"Usage: $0 {start|stop|restart|about|status|restart}"
        RETVAL=2
esac