kmk_rmdir --version (return code: 0)
kmk_rmdir - kBuild version 0.1.9998 (r2814)
kmk_rmdir --help (return code: 0)
usage: kmk_rmdir [-pv --ignore-fail-on-non-empty --ignore-fail-on-not-exist] directory ...
or: kmk_rmdir --help
or: kmk_rmdir --version