001、
[root@PC1 test]# ls
test.sh
[root@PC1 test]# cat test.sh ## 测试脚本
#!/bin/bash
read -p "please input an character:" key ## 给变量key赋值
case $key in ## case进行匹配
[0-9])
echo "number!"
;;
[a-z]|[A-Z])
echo "letter!"
;;
*)
echo "other!"
;;
esac
标签：case,shell,##,echo,key,linux,test From： https://www.cnblogs.com/liujiaxin2018/p/17153473.html