개인 노트 셸 프로 그래 밍 실천: case

case $1 in

	start)
		command
		;;
	stop)
		command
		;;
	restart)
		command
		;;
	*)
		command
esac

#!/bin/bash

cat <****************
** 1. backup**
** 2. copy**
** 3. quit**
****************
eof

read -p "          : " OP

case $OP in
	1|backup|b|back)
		echo "Backup Is Done..."
		;;
	2)
		echo "Copy IS Done...."
		;;
	3)
		exit
		;;
	*)
		echo "USAGE: sh $0 [ 1 | 2 | 3 ]" 
		exit
esac

. /etc/init.d/functions

# start | stop | restart |
case $1 in
	start)
		#1.        
		ngx_status=$(systemctl status nginx | grep Active | awk '{print $2}')
		#2.        （      、       、       ） 
		if [ "$ngx_status" == "inactive" ];then
			systemctl start nginx
			action "Nginx    ..." /bin/true
		elif [ "$ngx_status" == "active" ];then
			action "Nginx    ..." /bin/true
			exit
		fi
		;;
	stop)
			ngx_status=$(systemctl status nginx | grep Active | awk'{print $2}')
			if [ "$ngx_status" == "inactive" ];then
				action "Nginx    ..." /bin/true
			elif [ "$ngx_status" == "active" ];then
				systemctl stop nginx
				action "Nginx    ..." /bin/true
			fi
		;;
	*)
			echo "USAGE: sh $0 [ start | stop | restart ] "
esac

1.   7       。
2.          。

case $1 in
	Active|active)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status | awk '/Active/ {print $NF}'
		;;
	accept)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==3 {print $1}'
		;;
	handled)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==3 {print $2}'
		;;
	requests)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==3 {print $3}'
		;;
	reading)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==4 {print $2}'
		;;
	writing)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==4 {print $4}'
		;;
	waiting)
		curl -s -HHost:nginx.oldxu.com http://127.0.0.1:80/nginx_status |awk 'NR==4 {print $NF}'
		;;
	*)
		echo "USAGE: sh $0 [ active | accept | handled | requests | reading | writing | waiting ]"
esac