centos6.4下NGINX启动脚本

#!/bin/bash
# nginx     This shell script takes care of starting and stopping
#           nginx
#
# chkconfig: - 13 68
# description: nginx is a web server
### BEGIN INIT INFO
# Provides: $named
# Short-Description: start|stop|status|restart|configtest
### END INIT INFO
#variables
NGINX_BIN="/usr/local/nginx/sbin/nginx"
NGINX_CONF="/usr/local/nginx/conf/nginx.conf"
NGINX_PID="/usr/local/nginx/logs/nginx.pid"
NETSTAT="/bin/netstat"
alter=$1
prog=nginx
#load system function
. /etc/rc.d/init.d/functions
#function:echo ok or error
function if_no {
if [ $2 == 0 ]; then
echo -n $"$1 ${prog}:" && success && echo
else
echo -n $"$1 ${prog}:" && failure && echo
fi
}
#start nginx
function start {
if [ -s ${NGINX_PID} ]; then
echo "nginx already running"
else
if [ `${NETSTAT} -tnpl | grep nginx | wc -l` -eq 0 ]; then
rm -f ${NGINX_PID} 2>/dev/null
${NGINX_BIN} -c ${NGINX_CONF}
if_no start $?
else
${NETSTAT} -tnpl | grep nginx | awk '{ print $7}' | cut -d '/' -f 1 > ${NGINX_PID}
if_no start $?
fi
fi
}
#stp nginx
function stop {
if [ -s ${NGINX_PID} ]; then
cat ${NGINX_PID} | xargs kill -QUIT
if_no stop $?
else
if [ `${NETSTAT} -tnpl | grep nginx | wc -l` -eq 0 ]; then
rm -f ${NGINX_PID} 2>/dev/null
if_no stop 0
else
rm -f ${NGINX_PID} 2>/dev/null
kill `${NETSTAT} -tnpl | grep nginx | awk '{ print $7}' | cut -d '/' -f 1`
if_no stop $?
fi
fi
}
function restart {
if [ -s ${NGINX_PID} ]; then
cat ${NGINX_PID} | xargs kill -HUP
if_no restart $?
else
stop
sleep 1
start
fi
}
function status {
${NETSTAT} -tnpl | grep nginx | grep LISTEN
[ $? == 0 ] && echo "nginx is running" || echo "nginx is not running"
}
function configtest {
${NGINX_BIN} -t
}
case $alter in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
status)
status
;;
configtest)
configtest
;;
*)
echo "use:${NGINX} {start|stop|restart|status|configtest}"
;;
esac