export: export [-fn] [name[=value] ...] or export -p

Set export attribute for shell variables.

Marks each NAME for automatic export to the environment of subsequently executed commands. If VALUE is supplied, assign VALUE before exporting.

Options
-f refer to shell functions -n remove the export property from each NAME -p display a list of all exported variables and functions

An argument of `--' disables further option processing.

Exit Status:
Returns success unless an invalid option is given or NAME is invalid.