How do I add environment variables?
- To set variable only for current shell:
VARNAME="my value"
- To set it for current shell and all processes started from current shell:
export VARNAME="my value"
shorter, less portable version
To set it permanently for all future bash sessions add such line to your .bashrc file in your $HOME directory.
To set it permanently, and system wide (all users, all processes) add set variable in /etc/environment:
sudo -H gedit /etc/environment
This file only accepts variable assignments like:
VARNAME="my value"
Do not use the export keyword here.
You need to logout from current user and login again so environment variables changes take place.