Linux的启动脚本

#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# it is v.0.0.2 version.
# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
# It has a lot of features, but it‘s not for everyone.
# processname: nginx
nginx_sbin=/usr/local/nginx/sbin/nginx
nginx_config=/usr/local/nginx/conf/nginx.conf
nginx_pid=/var/run/nginx.pid
RETVAL=0
#source function library
. /etc/rc.d/init.d/functions

#source networking 
. /etc/sysconfig/network
[ -x ${nginx_sbin} ] ||  exit 0

#starting nginx server
start(){
    echo -n "starting nginx..."
    daemon  ${nginx_sbin} -c ${nginx_config}
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && touch /var/run/nginx_lock
    return $RETVAL
  
}

stop() {

  echo -e "Stopping nginx....."
  killproc ${nginx_sbin}
  RETVAL=$?
  [ $RETVAL = 0 ] && rm -f /var/run/nginx_lock 
}

restart() {
    stop
    sleep 5
    start
}
  
  
case $1 in 
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
     restart
     ;;
   *)
    echo $"Usage: nginx {start|stop|restart}"
    exit
esac