Manual:Edit.php
From MediaWiki.org
Edit an article from the command line
Usage: php edit.php [options...] <title>
Options:
-u <user> Username -s <summary> Edit summary -m Minor edit -b Bot (hidden) edit -a Enable autosummary --no-rc Do not show the change in recent changes
If the specified user does not exist, it will be created. The text for the edit will be read from stdin.