How to set system-wide environment variables in Linux

In Linux, when a user logs in, login shell executes /etc/profile script. This script customizes environment variables system-widely for all users. Part of what /etc/profile script does is to source all .sh files placed in /etc/profile.d directory. Therefore, in order to set system-wide environment variables in Linux, you can create a custom file with .sh extension in /etc/profile.d as follows.Read more »