select用法

1. #!/bin/bash
2. echo "Please chose a number, 1: run w, 2: run top, 3: run free, 4: quit"
3. echo
4. select command in w top free quit
5. do
6.     case $command in
7.     w)
8.         w
9.         ;;
10.     top)
11.         top
12.         ;;
13.     free)
14.         free
15.         ;;
16.     quit)
17.         exit
18.         ;;
19.     *)
20.         echo "Please input a number:(1-4)."
21.         ;;
22.     esac
23. done

select用法

原文：http://blog.51cto.com/amazing61/2063860