"Shell" Linux Shell Case detailed

In general, case is a judgment statement that is easier to understand than if.

Case Statement Format

case in 变量 值1)    内容 ;;值2)    内容 ;;esac

Note: Each content needs to be added after;; , can be written across rows or peers.

Instance: Executes the statement based on the selection entered by the user.

#!/bin/bash -# 打印选择菜单cat <<EOF        Option:        1) restart networking service.        2) start networking service.        3) stop networking service.        *) exit.EOFread -p "Please enter a option:" number# 使用case语句对参数进行判断case $number in1)        echo "The Networking service is restart,wait......" ;;2)        echo "The Networking service is start,wait......" ;;3)        echo "The Networking service is stop,wait......" ;;*)        echo "exit."  ;;esac

[Email protected] scripts]# bash case.sh
Option:
1) Restart networking service.
2) Start networking service.
3) Stop networking service.
*) exit.
Please enter a option:1
The Networking service is restart,wait ...

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"Shell" Linux Shell Case detailed