How To : Create / Modify / Delete an Environment Variable ?

Windows:

- Right-click your Computer icon (on your Desktop or in the Windows Menu) and choose Properties.
- A window entitled System is displayed. Click on Advanced system settings in its left panel.
- In the System Properties window select the Advanced tab and click on the Environment Variables… button given at the bottom of the window.
- In the Environment Variables window you will notice two sub-panels entitled User variables for your username and System variables.
- Use the buttons New..., Edit ... and Delete of the User variables panel (respectively the System variables panel) to create, modify or delete a User Environment variable (respectively a System Environment Variable).

Linux:

This depends on the Linux distribution. (To be Completed)