# Linux Kernel Module Cheat

### 38.4. Default command line arguments

It gets annoying to retype `--arch aarch64` for every single command, or to remember `--config` setups.

So simplify that, do:

    cp config.py data/

and then edit the `data/config` file to your needs.

Source: config.py

You can also choose a different configuration file explicitly with:

    ./run --config data/config2.py

Almost all options names are automatically deduced from their command line `--help` name: just replace `-` with `_`.

More precisely, we use the `dest=` value of Python’s argparse module.

To get a list of all global options that you can use, try:

    ./getvar --type input

but note that this does not include script specific options.