语法：
case "变量" in
"变量1")
...
;; #输出两个分号
"变量2")
...
;; #输出两个分号
"变量3")
...
;; #输出两个分号
*)
...
;; #输出两个分号
esac
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | #!/bin/bash# Author:James 2016-10-15echo "want to output a,input 1:"echo "want to output b,input 2:"echo "want to output c,input 3:"read -t 30 -p "please input your digit:" digitcase "$digit" in "1") echo "output a" #输出两个分号 ;; "2") echo "output b" ;; "3") echo "output c" ;; *) #其它输入 echo "output error,please input 1/2/2" ;;esac |