select用法

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select 语句

select表达式是bash的一种扩展应用，擅长于交互式场合。用户可以从一组不同的值中进行选择：

select var in ... ; do　break;done.... now $var can be used ....

下面是select使用的例子：

1.

#!/bin/bash##filename:what-lang-do-you-like_menu_select.sh clearPS3="What is your preferred scripting language? "select s in bash perl python ruby'(quit)'do        case $s in                bash|perl|python|ruby)  echo "You selected $s ."  ;;                '(quit)')               break ;;                *)                      echo "You selected error,retry..."  ;;        esacdone

2.#!/bin/bash##filename:what-lang-do-you-like_menu_select.sh clearPS3="What is your preferred scripting language? "select s in bash perl python ruby'(quit)'do        case $s in                bash|perl|python|ruby)  echo "You selected $s ."  ;;                '(quit)')               break ;;                *)                      echo "You selected error,retry..."  ;;        esacdone

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