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#!/bin/bash
#program:
# This program shows the user's choice
#History:
# 2013/08/15 lvyangjian firstrelease
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH

read -p "please input (Y/N): " yn
[ "$yn" == "Y" -o "$yn" == "y" ] && echo "ok,continue" && exit 0
[ "$yn" == "N" -o "$yn" == "n" ] && echo "oh,interrupt" && exit 0
echo "I don't what your choice is " && exit 0
~
结果显示
sh06.sh: 10: [: Y: unexpected operator
sh06.sh: 11: [: Y: unexpected operator
I don't what your choice is

请问是哪里错了

脚本没错，是shell错了。

shell错了？错在哪里，是编码问题还是什么？

Shell 执行错误，看下面的结果： 正确方法是：
1. 2.