You might occasionally want to have a listing of all the subdirectories, also. This command simply shows what directory you're in at the moment. It's useful for scripting in case you might ever want to refer to your current directory. A lot of people, surprisingly for me, prefer to use graphical file managers. That made it a bit easier for me to make the transition to Linux.
Copying works very much the same.
So a basic command line is just cp filename1 filename2 . There are other extensions to the cp command. You can use the -f command to force it. You can move an entire directory to its new destination. It's referred to as a symbolic link .