添加nginx为系统服务(service nginx start/stop/restart)

1、在/etc/init.d/目录下编写脚本，名为nginx

 #!/bin/sh
 #
 # nginx - this script starts and stops the nginx daemon
 #
 # chkconfig:   -
 # description: Nginx is an HTTP(S) server, HTTP(S) reverse \
 #               proxy and IMAP/POP3 proxy server
 # processname: nginx
 # config:      /etc/nginx/nginx.conf
 # config:      /etc/sysconfig/nginx
 # pidfile:     /var/run/nginx.pid 

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

 # Source networking configuration.
 . /etc/sysconfig/network 

 # Check that networking is up.
 [ "$NETWORKING" = "no" ] && exit  

 nginx="/usr/local/nginx/sbin/nginx"
 prog=$(basename $nginx) 

 NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf" 

 [ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx 

 lockfile=/var/lock/subsys/nginx 

 start() {
     [ -x $nginx ] || exit
     [ -f $NGINX_CONF_FILE ] || exit
     echo -n $"Starting $prog: "
     daemon $nginx -c $NGINX_CONF_FILE
     retval=$?
     echo
     [ $retval -eq  ] && touch $lockfile
     return $retval
 } 

 stop() {
     echo -n $"Stopping $prog: "
     killproc $prog -QUIT
     retval=$?
     echo
     [ $retval -eq  ] && rm -f $lockfile
     return $retval
 killall - nginx
 } 

 restart() {
     configtest || return $?
     stop
     sleep
     start
 } 

 reload() {
     configtest || return $?
     echo -n $"Reloading $prog: "
     killproc $nginx -HUP
 RETVAL=$?
     echo
 } 

 force_reload() {
     restart
 } 

 configtest() {
 $nginx -t -c $NGINX_CONF_FILE
 } 

 rh_status() {
     status $prog
 } 

 rh_status_q() {
     rh_status >/dev/null >&
 } 

 case "$1" in
     start)
         rh_status_q && exit
     $
         ;;
     stop)
         rh_status_q || exit
         $
         ;;
     restart|configtest)
         $
         ;;
     reload)
         rh_status_q || exit
         $
         ;;
     force-reload)
         force_reload
         ;;
     status)
         rh_status
         ;;
     condrestart|try-restart)
         rh_status_q || exit
             ;;
     *)
       echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
         exit  

 esac  

[root@example ~]# cp nginx /etc/init.d/
[root@example ~]# chmod 755 /etc/init.d/nginx
[root@example ~]# chkconfig --add nginx

[root@example ~]# service nginx start

[root@example ~]# service nginx stop

[root@example ~]# service nginx reload