Use Emacs DIRED and keyboard macros
Complex operations on grouped files
Raw link: https://www.youtube.com/watch?v=5NShmv_3rYk
In this screen cast I showcase the potential of combining dired, the
built-in Emacs file manager, with keyboard macros. This allows us to
perform an arbitrary number of tasks in a collection of files that are
grouped together as a directory or dynamically (with search tools like
find-name-dired).
The idea is that we can use keyboard macros to perform changes visually across all our files, without having to think about complex regular expressions for the necessary search+replace actions.
And here is my own config file, with tweaks for Dired and others: protesilaos.com/emacs/dotemacs.