How do I stop oracle JDK from hijacking PATH and breaking update-alternatives?

Question

I installed oracle jdk on ubuntu 14.04. Now I want to toggle back to openjdk:

sudo update-alternatives --config java
sudo update-alternatives --config javac

But it doesn't work. It seems oracle's jdk somehow keeps adding itself to my $PATH:

...:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin:...

I've found and killed /etc/profile.d/jdk.csh, but there seems to be a failsafe. The audacity!!

How can I fix this?

What of the jdk.sh in that same location, did you kill that too? — George Udosen, Mar 20 '17 at 19:56
@George There aren't any other related files there. I've tried searching through /etc but haven't found anything else updating PATH. — jozxyqk, Mar 20 '17 at 20:50
This would have been the best way to remove it sudo update-alternatives --remove "java" "/usr/lib/jvm/jdk[version]/bin/java" — George Udosen, Mar 20 '17 at 23:31
@George I'd prefer not to actually remove it if possible. I just want to temporarily swap to openjdk and then swap back again. It seems like update-alternatives was designed for this. — jozxyqk, Mar 21 '17 at 02:09
Then sudo update-alternatives --config java should have shown the the three then you pick from there... — George Udosen, Mar 21 '17 at 05:58
I'm not sure what you mean. I've selected openjdk using the above update-alternatives commands. It doesn't work, because that seems to use symlinks but oracle's jdk is overriding my PATH which takes priority. I don't know how the values are being added to PATH and am hoping someone here can point me in the right direction. — jozxyqk, Mar 21 '17 at 22:43

score 0 · Answer 1 · answered Apr 21 '19 at 00:19

0

I think you are on the right track by removing /etc/profile.d/jdk.csh and /etc/profile.d/jdk.sh. You just have to re-login or reboot so that the PATH changes have effect.

answered Apr 21 '19 at 00:19

user946965

1

How do I stop oracle JDK from hijacking PATH and breaking update-alternatives?

1 Answers1