bash 如何更改 $PATH 的顺序？
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How do I change the order of $PATH?
提问by pill45
echo $PATHgives me
echo $PATH给我
/Library/Frameworks/Python.framework/Versions/3.4/bin:/Applications/Sublime Text 2.app/Contents/SharedSupport/bin:/Users/pathreskoo/anaconda/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/opt/local/bin:/opt/local/sbin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/git/bin
but when I want to change the order of /usr/local/binto the front of /Library/Frameworks/Python.framework/Versions/3.4/bin, I type
但是当我想将 的顺序更改/usr/local/bin为 的前面时/Library/Frameworks/Python.framework/Versions/3.4/bin，我输入
sudo emacs /etc/paths
I only get
我只得到
/usr/local/bin:
/usr/bin:
/bin:
/usr/sbin:
/sbin:
How can I insert /usr/local/binin front of my PATH?
我怎样才能在我/usr/local/bin的前面插入PATH？
回答by Brad Peabody
You can set your PATHin the file .bash_profile, which is in your home directory.
您可以在您的主目录PATH中的文件中设置您的.bash_profile。
More specifically, you can simply add the following line to the end of that file
更具体地说，您只需将以下行添加到该文件的末尾
export PATH=/usr/local/bin:$PATH
This results in /usr/local/binbeing prepended to the existing PATH. In other words, the folder /usr/local/binis inserted in front of your PATH, and so it would have the highest priority. You can also append a folder to your path by doing
这导致/usr/local/bin被添加到现有的PATH. 换句话说，文件夹/usr/local/bin插入在您的 前面PATH，因此它具有最高优先级。您还可以通过执行将文件夹附加到您的路径
export PATH=$PATH:/usr/local/bin
In general, you can set the order of the folders or files that you export in a similar way as the following:
一般情况下，您可以按照如下类似的方式设置您导出的文件夹或文件的顺序：
export PATH=/usr/local/bin:/Applications/Sublime Text 2.app/Contents/SharedSupport/bin:/Users/pathreskoo/anaconda/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/opt/local/bin:/opt/local/sbin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/git/bin
Note: this is not the only place you can set the PATH, but it is a common one.
注意：这不是唯一可以设置 的地方PATH，但它是一个常见的地方。
回答by u7137467
Your $PATH normally overridden by the initiation part of your shell. Normally follows the system-wide profile (/etc/profile), then user-side profile (if you use bash .profile, .bash_profile, .bashrc) and any source command in these files. The overridden command mainly in .bashrc
您的 $PATH 通常会被 shell 的启动部分覆盖。通常遵循系统范围的配置文件 (/etc/profile)，然后是用户端配置文件（如果您使用 bash .profile、.bash_profile、.bashrc）以及这些文件中的任何源命令。主要在 .bashrc 中的覆盖命令
Edit you .bashrc file and find $PATH, you may find the export command and delete the path you do not want. export $PATH=/usr/local/bin:$PATH override the command user-wide.
编辑你的 .bashrc 文件并找到 $PATH，你可能会找到 export 命令并删除你不想要的路径。export $PATH=/usr/local/bin:$PATH 覆盖用户范围的命令。
