MATLAB Command History: how to save back up of existing history

Question

According to this link:

How to save contents of MATLAB's command windows to in a file?

I can back up my commends going forward using diary which is great:

However I would also like to back up my existing command history, I assume the command history is stored in a text file somewhere correct? If so can I just copy this?

Answer 1

Type prefdir on Matlab and it will give you a folder.

Your command history is in that folder, in a file called history.m.

Answer 2

Have a look at the "Save Entire Command History" submission, which will let you save all your command history, not just the last 20k allowed by MATLAB.