title: apply changes to other files via git?
body: <p>I have a git repo with lots of quite similar files (something like config files).
  It often happens that I have to do a certain change to all of those files (change a parameter value or add a new parameter).<br><br>
  Does anyone know a way of doing this change to only one of the files and then "cherry pick" it to the other files with git?<br><br>
  I understand that git has the capability of doing this if the files are each in it's own git repo and all have the same name - so I was wondering if there is a (possibly scriptable) way of using this capability for files that have different names but are in the same repo...</p>