如何写一个Linux下的启动脚本 RC

#! /bin/sh
### BEGIN INIT INFO
# Provides: TopCaver
# Required-Start: $remote_fs $syslog    
# Required-Stop: $remote_fs $syslog    
# Default-Start: 2 3 4 5    
# Default-Stop: 0 1 6    
# Short-Description: TopCaver    
# Description: This file starts and stops TopCaver server    
# 
### END INIT INFO    
case "$1" in
    start)
        cd /opt/topcaver && nohup /opt/topcaver/topcaver-server >/dev/null 2>&1 &
    ;;
    stop)
        killall topcaver-server
    ;;
    restart)
        killall topcaver-server
        cd /opt/topcaver && nohup /opt/topcaver/topcaver-server >/dev/null 2>&1 &
    ;;
    status)
        ps -ef | grep "qr-govf.com" | grep -v grep && exit 0 || exit $?
    ;;
    *)
        echo "Usage: $0 {start|stop|restart}" >&2
        exit 3
    ;;
esac