Question about how to update files
I'm hoping there is a command line script that will do the following. I have folder A on my laptop with files and folder B on my external hard drive with files. I want to periodically run a scrip that will look at the files in A and B. If there are files in A that are not in B, then I would like to add those files to the folder to B, leaving A untouched. Is there a command line code for this?
I've been using rsync, but I need the space on my laptop now. I still want to keep the files on my external hard drive for later use.