如何在 Mac OSX Snow Leopard 上修复 bash 中的路径变量
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How to fix path variable in bash on Mac OSX Snow Leopard
提问by Adam
This might be a noob question, but I need help. I screwed up my terminal by trying to alter my path variable using the following command:
这可能是一个菜鸟问题，但我需要帮助。我尝试使用以下命令更改我的路径变量，从而搞砸了我的终端：
$ sudo nano .profile
$ sudo nano .profile
Before I did that, if I were to type:
$ echo $PATH
在我这样做之前，如果我要输入：
$ echo $PATH
I would get: /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
我会得到： /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
When I opened .profile in nano it told me that the file didn't exist. I figured that made sense, since I had never edited this file before. I proceeded to enter a path to a directory I was using for a php framework and saved the file.
当我在 nano 中打开 .profile 时，它告诉我该文件不存在。我认为这是有道理的，因为我以前从未编辑过这个文件。我继续输入我用于 php 框架的目录的路径并保存文件。
After I saved the file, I noticed that none of my bash commands are working. Now I can't do anything from the terminal. I can't even edit .profile in nano because it says -bash: nano: command not found
保存文件后，我注意到我的 bash 命令都不起作用。现在我不能从终端做任何事情。我什至无法在 nano 中编辑 .profile 因为它说-bash: nano: command not found
I'm clearly new to working with the terminal. I feel completely lost. Please provide some guidance on how to restore the terminal to working condition.
我显然不熟悉使用终端。我觉得完全迷失了。请提供一些有关如何将终端恢复到工作状态的指导。
回答by Yuji
Use absolute paths.
使用绝对路径。
$ /usr/bin/sudo /usr/bin/nano .profile
If you add something to a path, never just do
如果你在路径上添加一些东西，永远不要只是做
PATH=/path/to/something
instead do
而是做
PATH=$PATH:/path/to/something
By the way, you shouldn't/don't have to use sudoto edit your own file, such as .profile. Use sudoonly when you need to edit the file which doesn't to belong to your account.
顺便说一句，您不应该/不必使用sudo来编辑您自己的文件，例如.profile. sudo仅在您需要编辑不属于您帐户的文件时使用。
回答by pacoguevara
I had the same problem! The way I solved was writing the follow command in the terminal: PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin:/usr/local/git/bin:/usr/X11/bin
我有同样的问题！我解决的方法是在终端中编写以下命令：PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin:/usr/local/ git/bin:/usr/X11/bin
Hope it can be useful for you
希望对你有用
