> GNU also added standard options: almost every GNU program supports the options --help, --version GNU keeps a list of them, so that anyone implementing a simi

> GNU also added standard options: almost every GNU program supports the options --help, --version GNU keeps a list of them, so that anyone implementing a similar functionality should use the same option if it already exists: https://www.gnu.org/prep/standards/standards.html#Option-Table https://www.gnu.org/prep/standards/standards.html#Option-Tab...