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I have been trying to set environment variables that would be saved upon reboot, but without success.

When I set variables using the export or setenv command, as root or any other user, it gets saved on the session until reboot. After reboot, the variables are lost.

In particular, I need to set $JAVA_HOME.

So I do like this

enter image description here

but nothing is working as I indicated.

What am I doing wrong?

Jeff Schaller
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DmitryBoyko
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    Please don't post screenshots of text, paste the *actual text*... – jasonwryan Mar 22 '16 at 18:08
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    I would argue that this is not a duplicate, the referenced question is not specifically for EL 7 type distros. – simon Oct 30 '17 at 08:30
  • @jasonwryan @Anthon This is not a duplicate questions. User environment variables and system wide env vars like the OP is trying to set are different concepts. The linked question references `.bashrc` and methods that only work for a single user. This question requires a system-wide method such as the one suggested by @tagwint – Routhinator Jun 28 '18 at 17:10

2 Answers2

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Depending on your shell, there usually has to be a .<shellnamehere>rc file where you can store these variables that you want persisting across logout and reboot events. .bashrc is where you do it if your shell choice is bash

EDIT: in the terminal, run command

env | grep SHELL

if you see SHELL=bash then, run this command:

echo 'export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-2.b15.el7_2.x86_64"' >> $HOME/.bashrc

this last command have some assumptions. If your SHELL doesn't come up as bash come back here and report what you get. After a logout and login back if you don't see your variable already set, again come back and report what error messages you see, if any.

MelBurslan
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If it is about setting JAVA_HOME system-wide, /etc/profile.d/ would be a good choice. 

echo export JAVA_HOME="put path to java home here">/etc/profile.d/javaenv.sh
chmod 0755 /etc/profile.d/javaenv.sh

on your next logon you'll have it

Tagwint
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