如何更改$ PATH的顺序？

Question

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

但是当我想改变/usr/local/bin前面的顺序时/Library/Frameworks/Python.framework/Versions/3.4/bin,我输入

sudo emacs /etc/paths

我只能得到

/usr/local/bin:
/usr/bin:
/bin:
/usr/sbin:
/sbin:

我怎么能插/usr/local/bin在我面前PATH？

Answer 1

您可以PATH在文件中设置您的文件.bash_profile,该文件位于您的主目录中.

更具体地说,您只需将以下行添加到该文件的末尾即可

export PATH=/usr/local/bin:$PATH

这导致/usr/local/bin了现有的前奏PATH.换句话说,文件夹/usr/local/bin插入到您的前面PATH,因此它具有最高优先级.您还可以通过执行操作将文件夹附加到路径中

export PATH=$PATH:/usr/local/bin

通常,您可以按照与以下类似的方式设置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

注意:这不是您可以设置的唯一地方PATH,但它是一个常见的地方.