-B SECONDS, --background=SECONDS<br>                        run asynchronously, failing after X seconds<br>                        (default=N/A)<br>  -C, --check           don't make any changes; instead, try to predict some<br>                        of the changes that may occur<br>  -D, --diff            when changing (small) files and templates, show the<br>                        differences in those files; works great with --check<br>  -e EXTRA_VARS, --extra-vars=EXTRA_VARS<br>