xmonad --version (return code: 0)
xmonad 0.13
xmonad --help (return code: 0)
Usage: xmonad [OPTION]
Options:
--help Print this message
--version Print the version number
--recompile Recompile your ~/.xmonad/xmonad.hs
--replace Replace the running window manager with xmonad
--restart Request a running xmonad process to restart