bash: set - Make functions or variable always export.

[hoodedvul]

Take into account the main readme for this section. README first.

Using set -a in a script or command line will cause a function or variable to export automatically and be available for subsequent commands.

Description of set -a: Mark variables which are modified or created for export.

Check if variable FRUIT exists.

$  env | grep FRUIT

Make variable export automatically. export command not used.

$ set -a
$ FRUIT=apple
$  env | grep FRUIT
FRUIT=apple