OK #orgmode and #emacs folks of the mastodons, answer me this (pretty please):

is there a way to harness the power of Emacs without running Emacs? How do you do it?

Say, for example, I was to create a macro that uses occur in a file, then replaces all instances of that text with another text, and I want this macro to run with chron once a week...

...or, more org centric, say use org-clone-subtree-with-time-shift in org-mode on a file without actually opening it in emacs, etc.

How would you do it?