caseselect

一些shell程序

#!/bin/bash
#caseselect
echo -n "enter a number from 1 to 5:"
read ANS
 case $ANS in 
 1) echo "you select 1"
  ;;
 2) echo "you select 2"
  ;;
 3) echo "you select 3"
  ;;
 4) echo "you select 4"
  ;;
 5) echo "you select 5"
  ;;
 *) echo "`basename $0`:This is not between 1 and 5" >&2
  exit 1
  ;;
esac