casewhileshell脚本

case，while,for shell脚本中经常可以看到read -p “ 提示符” 不接变量

如题：一般是这样用的read -p "Please press enter to continue";换echo 出错 case，while，for，循环中，read -p "提示符" 不接变量时，他与echo区别在于，他的输入赋值给REPLY，echo只是输出到终端，这样做有什么意义呢？换句话REPLY能起什么作用？

case做带选项的shell脚本以及结合while做交互选择的shell脚本的最基本写法

1、case做带选项的执行脚本： #!/bin/bash case $1 in x) echo "x is selected" ;; *) echo "please use x" esac 二、case结合while做交互脚本： #!/bin/bash while true do read -p "Enter port of chaoxingdata(d,1): " port case ${p...

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