$ ./utf8checker.py -h
usage: check_utf8.py [-h] [-r] path file_name
List non UTF-8 files and files with non LF line endings.
positional arguments:
path file with changes or pages to activate
file_name file name (shell-style pattern)
optional arguments:
-h, --help show this help message and exit
-r traverse the path recursively
cursively.