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[问]bash脚本for循环参数问题

时间：2010-04-10

来源：互联网

还是编shell的新手，今天试编了一下shell程序，可是在中括号的条件判断是中出现了问题

代码:

#!/bin/bash
# program:
# This program will show the user's choice
# History:
# 2010/4/10 susu First release
PATH=:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
read -p "Please input choice: " choice
[ "$choice" == "Y" -o "$choice" == "y"] &&echo "Ok,continue" &&exit 0这里的空格符号，我非常注意了，就是每个部分中间都要有空格
[ "$choice" == "N" -o "$choice" == "n"] &&echo "Oh,interrupt" &&exit 0
echo "I don't know what is your choice"

可是确出现如下问题
Please input choice: n
./sh06.sh: line 10: [n：找不到命令
./sh06.sh: line 11: [n：找不到命令
I don't know what is your choice
请大牛解答，再问个小问题，就是面板上面的nm-applet怎么重现显示，就是我不小心把它从面板上删除了，现在无法切换网络状态了

作者: 海贼的童话发布时间: 2010-04-10

代码:

#!/bin/bash
# program:
# This program will show the user's choice
# History:
# 2010/4/10 susu First release
PATH=:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
read -p "Please input choice: " choice
[ "$choice" == "Y" -o "$choice" == "y" ] &&echo "Ok,continue" &&exit 0 #这里的空格符号，我非常注意了，就是每个部分中间都要有空格
[ "$choice" == "N" -o "$choice" == "n" ] &&echo "Oh,interrupt" &&exit 0
echo "I don't know what is your choice"

作者: JiangHui 发布时间: 2010-04-10

JiangHui 写道:

代码:

#!/bin/bash
# program:
# This program will show the user's choice
# History:
# 2010/4/10 susu First release
PATH=:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
read -p "Please input choice: " choice
[ "$choice" == "Y" -o "$choice" == "y" ] &&echo "Ok,continue" &&exit 0 #这里的空格符号，我非常注意了，就是每个部分中间都要有空格
[ "$choice" == "N" -o "$choice" == "n" ] &&echo "Oh,interrupt" &&exit 0
echo "I don't know what is your choice"

什么什么？是否可以解决？

作者: 海贼的童话发布时间: 2010-04-10

帮你改了，复制上去

作者: JiangHui 发布时间: 2010-04-10

JiangHui 写道:

帮你改了，复制上去

啊，是哪里有问题呀，是否可以指教一下？

作者: 海贼的童话发布时间: 2010-04-10

就是空格问题啊

作者: JiangHui 发布时间: 2010-04-10

JiangHui 写道:

就是空格问题啊

对不起，我还是没有看出来，抱歉
我明明是按照要求写的空格啊，就是把所有的一个栏目都要加上空格啦，难道有什么不同吗？

作者: 海贼的童话发布时间: 2010-04-10

用vimdiff比较下两个文件

右边的中括号

作者: JiangHui 发布时间: 2010-04-10

摸拜慧慧

作者: pocoyo 发布时间: 2010-04-10

海贼的童话写道:

JiangHui 写道:

代码:

#!/bin/bash
# program:
# This program will show the user's choice
# History:
# 2010/4/10 susu First release
PATH=:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
read -p "Please input choice: " choice
[ "$choice" == "Y" -o "$choice" == "y" ] &&echo "Ok,continue" &&exit 0 #这里的空格符号，我非常注意了，就是每个部分中间都要有空格
[ "$choice" == "N" -o "$choice" == "n" ] &&echo "Oh,interrupt" &&exit 0
echo "I don't know what is your choice"

什么什么？是否可以解决？

我刚刚发现一个问题，就是加上可执行的属性后，./sh06.sh(这个文件时这个名字）完全正常
但是如果继续用sh sh06.sh就会重新出现那个问题，请问这是怎么回事？
如下所示
Please input choice: Y
Ok,continue
susu@susu17:29:38:~/scripts$ ./sh06.sh
Please input choice: N
Oh,interrupt
susu@susu17:29:41:~/scripts$ sh sh06.sh
Please input choice: y
[: 10: y: unexpected operator
[: 11: y: unexpected operator
I don't know what is your choice

作者: 海贼的童话发布时间: 2010-04-10

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