I use Ubuntu 19.04.

I have all my files (pics, documents, my GNUCash save file, CV etc) on an external drive. I just plug it in when I need to.

I then have a backup of this drive on another external drive.

How do I add new files, remove deleted files and update modified files on the backup drive?

If I simply copy and paste then anything new will be added to the backup... this is good! But anything I delete from the files drive will remain on my backup drive. Everything else will have to be re-written to my backup drive to so I can make sure the modified files (such as the GNUCash save file or my CV/resume) is backed up.

Thank you for any suggestions!

Make yourself a drink of choice (non-intoxicating would be best) and read the manpage for rsync.

https://askubuntu.com/questions/4760...-source-folder


I'd read over that post and do some testing before actually putting it into service while sipping on that drink, or two, maybe three.

I just delete everything on 'drive2', & cp -a my present ('drive1') files over to it - doesn't really take that long - especially if using USB3.