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如何在选择菜单中的 bash 脚本中定义快捷方式？

tag-icon • tag-icon linux bash shell-script shell
如何在选择菜单中的 bash 脚本中定义快捷方式？

如何通过在 shell 脚本中选择菜单来定义快捷方式，例如“c”代表“创建”、“d”代表“删除”或“n”代表“新建”？

代码：

#!/bin/bash

PS3="Enter an option: "

select option in create delete new quit
do
    echo "Selected option was: $option"

if [ "$option" == "create" ]

then
 
read -r -p 'Create new partition: Please define a name of the partition: ' new_partition

read -r -p 'Define Size: Please define a size of the partition: ' partition_size

break

fi

if [ "$option" == "delete" ]

then
 
read -r -p 'Delete partition: Please define a name of the partition: ' delete_partition

break

fi

if [ "$option" == "new" ]

then
 
read -r -p 'Reset memory usage: Please define a name of the partition: ' reset_partition

break

fi

if [ "$option" == "quit" ]

then

break

fi

done

答案1

您在select提示中输入的任何内容都将反映在$REPLY变量中。不幸的是，您必须按“回车”键才能终止输入。因此，$REPLY无论何时输入“c”、“d”、“n”或“q”字符，都将保留“c”、“d”、“n”或“q”字符，并且您可以case对其运行语句：

PS3="enter create, delete, new, quit, and hit <Return> "
select OP in create delete new quit
  do echo ">$OP<, >$REPLY<"
  done
1) create
2) delete
3) new
4) quit
enter create, delete, new, quit, and hit <Return> c
><, >c<
enter create, delete, new, quit, and hit <Return> d
><, >d<
enter create, delete, new, quit, and hit <Return> 1
>create<, >1<
enter create, delete, new, quit, and hit <Return>

答案2

读取输入，然后进行大小写切换：

#!/bin/sh

echo select... c: create, d: delete, x:xxx...

read OPT

case $OPT in
c*)
echo c
;;

d*)
echo d
;;

*)
echo “User Selected Choice not present”
exit 1

esac

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