Learn the fundamentals of sorting and de-duplicating text on the command line. If you've been using the command line for a long time, it's easy to take the commands you use every day for granted. But, ...

Tune into her 2-Minute Linux video tutorials and take command of your command line.

Linux commands can provide details on files and show options for customizing file listings, but can also reach as deeply into a file system as you care to look.

That will run the `touch` command on every folder in /Volumes/SDCardName (change the path appropriately). Afterwards, `ls -t` will sort the listing in time order, which should also be alphabetical ...