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MediaWiki has command-line maintenance scripts which can be used for one off or repeated tasks.

Some MediaWiki extensions also have maintenance scripts. Your task is to make sure that the maintenance scripts for the extension set the proper requirements (see documentation). For this task, you will need to fix all scripts in 3 extensions. A list of extensions that need updating are on the Wikimedia Phabricator task.

Once you have claimed this task, please edit the description of the Phabricator task (use "Edit Task" in the upper right corner; the "Description Preview" at the bottom might also be helpful!) to indicate which 3 extensions you will be working on. This is so you don't conflict or overlap with other students. (If you have never used Phabricator before, see the Phabricator Help for how you can log in with your Wikimedia account.)

https://phabricator.wikimedia.org/T152139

If you've questions, feel free to ask in the phabricator task, contact Legoktm (legoktm in #wikimedia-dev) or Reedy (Reedy in #wikimedia-dev).