Mkdir

mkdir is a Unix command for making a directory, or folder.

Making a directory is very simple from the command line. If you want to make a directory, say for your music, then navigate to your home directory,  /home/username, and issue the command

mkdir music

This will create the directory /home/username/music

You can also create directories in other directories that you have write access to, like the /tmp directory, without navigating to it. Just enter the full path of the new directory.

mkdir /tmp/stuff