I try to fix a problem with my Android Studio Installation and for that I want to edit the $PATH variable and the $JAVA_HOME variable global and not only for one session.

As I described here (Oracle Java JDK Installation) my Android Studio does not find my JAVA JDK.

My question now: when I type echo $PATH, I receive:


but I already edited my environment file (./etc/environment) to:

### begin crouton-generated environment variables
### end crouton-generated environment variables

Why does the $PATH variable not change and is not affected by my edit?

Where can I edit the $JAVA_HOME variable? I cannot find the correct file for that.

Thank you very much for your support.

  • What is the path to your "environment file"?
    – edwinksl
    Jul 27, 2016 at 2:22
  • Thanks for your reply. It is located at ./etc/environment
    – Andre
    Jul 27, 2016 at 6:29
  • Do what @Zanna said in her answer and it should work.
    – edwinksl
    Jul 27, 2016 at 6:30

2 Answers 2


You need to log out of your user session and log back in again for changes made to /etc/environment to take effect.

But you can make it work immediately by running this:

source /etc/environment && export PATH

I found that very useful command here on Stack Overflow


You must add the code in ~/.profile. Example:

Make a copy of path variable before doing this procedure.

In ~/.profile, there is a section like this:

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then

So, add at this at the end of the file:



The line above will add the directories in the existing path.

  • Your English is not perfect, but it's certainly not bad.
    – wjandrea
    Jul 27, 2016 at 3:18
  • Thanks for your reply. It worked so far. I was able to edit my PATH and JAVA_HOME variable permanently. Unfortunatly, my Android Studio error still occurs. I literally have no idea what to do now.
    – Andre
    Jul 27, 2016 at 6:55
  • Did you already tried add in /etc/environment and do logout/login? Jul 27, 2016 at 13:17
  • Yeah, more than once. I have now edited both ~/.profile and etc/environment with the same PATH + JAVA_HOME in ~/.profile.
    – Andre
    Jul 27, 2016 at 23:47
  • 1
    Now it works. Had to fix two more things in Android Studio. (askubuntu.com/questions/801104/oracle-java-jdk-installation/…)
    – Andre
    Jul 28, 2016 at 1:28

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