Yes I Know the Bash and Linux Command Line Tools 7: navigating the filesystem hierarchy

Now you know how to download, extract and identify the content of an archive.

In this video, we see how to navigate the filesystem hierarchy. That is how to navigate between the various directory on your computer from the command line. Basically, at the end of this video, you won’t need anymore the file browser of your graphical desktop environment!

## The video ends with a challenge for you:
In the “UnixCommandLine/Documents/unknown” directory you will find a set of files with strange names. Your job is to *identify* what those files are (image, audio files, text files, and so on), and then you need to *rename* those files by adding the correct extension. So, JPEG images will be renamed to end with “.jpg” (or “.jpeg2 if you prefer;)

To do that, you will need several of the commands we’ve seen so far. Don’t hesitate to post your solution in the comment section!