export NAME=value
export NAME=value
Risk: Safe
What it does
Sets an environment variable for the programs you start here.
When to use it
To give programs a setting without changing their code.
Example
$ export CHEF=KancilStick a note on the wall: CHEF is Kancil.
$ echo $CHEFRead the note back.
$ envList every environment variable.
Learn it in: Linux crash course · Official docs