I’d like to automate the search/replace action on a lot of repositories I don’t own. Do you know of a tool that automates it and also makes pull-requests for me?
There are quite a few bots i've seen on github that crawl github looking for certain file types and doing stuff on them. I'm not exactly sure how to search for them though.
BUT! on this very same hackernews list, i just saw an example of one for replacing/updating copyright dates.
think GitHub itself does a good job on this already.
You can search, click the edit button at the top of a file (forks and opens online editor), make your changes with the commit message being used for the PR text and then click the PR button.
The online editor is perfectly fine for small changes.
Edit: Maybe I got your question wrong. Are you trying to apply the same search/replace to multiple repos?
BUT! on this very same hackernews list, i just saw an example of one for replacing/updating copyright dates.
Maybe you can modify this one to fit your needs?
https://github.com/ryanmjacobs/github-copywriter