How to remove entry from $PATH on mac

问题

I was trying to install Sencha Touch SDK tools 2.0.0 but could not run it properly. It created an entry in the $PATH variable. Later I deleted the sencha sdk tools folder but didn't realize that the path variable is still there.

When i did echo $PATH I got -

/Applications/SenchaSDKTools-2.0.0-beta3:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin

I searched on how to remove variables from $PATH and followed these steps :

1. Gave the command PATH="/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin"
2. Did echo $PATH which showed /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
3. gave the command export PATH
4. Closed terminal and reopened it. Gave the command echo $PATH. This time I got /Applications/SenchaSDKTools-2.0.0-beta3:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin

Can anyone tell me what am i doing wrong?

回答1:

What you're doing is valid for the current session (limited to the terminal that you're working in). You need to persist those changes. Consider adding commands in steps 1-3 above to your ${HOME}/.bashrc.

回答2:

1. echo $PATH and copy it's value
2. export PATH=""
3. export PATH="/path/you/want/to/keep"

回答3:

Check the following files:

/etc/bashrc
/etc/profile
~/.bashrc
~/.bash_profile
~/.profile
~/.MacOSX/environment.plist

Some of these files may not exist, but they're the most likely ones to contain $PATH definitions.

回答4:

On MAC OS X Leopard and higher

cd /etc/paths.d

There may be a text file in the above directory that contains the path you are trying to remove.

vim textfile //check and see what is in it when you are done looking type :q 
//:q just quits, no saves

If its the one you want to remove do this

rm textfile //remove it, delete it

Here is a link to a site that has more info on it, even though it illustrates 'adding' the path. However, you may gain some insight.

回答5:

when you login, or start a bash shell, environment variables are loaded/configured according to .bashrc, or .bash_profile. Whatever export you are doing, it's valid only for current session. so export PATH=/Applications/SenchaSDKTools-2.0.0-beta3:$PATH this command is getting executed each time you are opening a shell, you can override it, but again that's for the current session only. edit the .bashrc file to suite your need. If it's saying permission denied, perhaps the file is write-protected, a link to some other file (many organisations keep a master .bashrc file and gives each user a link of it to their home dir, you can copy the file instead of link and the start adding content to it)

回答6:

Use sudo pico /etc/paths inside the terminal window and change the entries to the one you want to remove, then open a new terminal session.

来源：https://stackoverflow.com/questions/15872666/how-to-remove-entry-from-path-on-mac