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While installing Android Studio, it installed Jayatana as a dependency. Now when I ran java, it showed me a message as: Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar

I uninstalled the jayatana package, but the message didn't disappear. So I unset the environment variable using unset JAVA_TOOL_OPTIONS but this only stays for a bash session. If I close and reopen the shell, the variable is back. I have looked into the .bashrc, .profile, /etc/profile, /etc/bash.bashrc files and I couldn't find this variable defined anywhere.

Is there a way to permanently unset this environment variable? Or to find where it is defined?

  • How did you install and remove jayatana? If you did it using apt-get it should have removed anything it installed, but if there is a bug in the package, you may need to apt-get remove --purge jayatana -- if that helps, file a bug against the package. – tripleee Mar 11 '15 at 7:07
  • @tripleee I did not install jayatana. It got installed along with Android Studio by Ubuntu Make. I did not purge it while removal, but the package did uninstall successfully. I just needed to log out and back in for the unset command to show permanent change, as I discovered later. – Pawan Mar 11 '15 at 7:16
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To find which file defines JAVA_TOOL_OPTIONS, run this:

PS4='+ $BASH_SOURCE:$LINENO:' BASH_XTRACEFD=7 bash -xlic ""  7>trace.out

The above command turns on diagnostics and saves the diagnostic output to trace.out. (For an explanation of how it works, click here.) When the command is done, run:

grep JAVA_TOOL_OPTIONS trace.out

This will show you which file defines JAVA_TOOL_OPTIONS and the line number in that file which does it.

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