1.

Create a file called topjava.sh under /etc/profile.d/ directory.

vi /etc/profile.d/topjava.sh

2.

Add the following contents:

#!/bin/bash

TOPJAVA_ROOT=/home/ilnur/repo/topjava

PATH=$TOPJAVA_ROOT/bin:$PATH

export PATH TOPJAVA_ROOT

export CLASSPATH=.

3.Save and close the file.

:w

:q

4.Make it executable using the following command.

chmod +x /etc/profile.d/topjava.sh

5.Then, set the environment variables permanently by running the following command:

source /etc/profile.d/topjava.sh