twill-fork -V (return code: 2)
Usage: twill-fork [options]
twill-fork: error: no such option: --version
twill-fork --help (return code: 0)
Usage: twill-fork [options]
Options:
-h, --help show this help message and exit
-u URL, --url=URL start at the given URL before each script
-n NUMBER, --number=NUMBER
number of times to run the given script(s)
-p PROCESSES, --processes=PROCESSES
number of processes to execute in parallel