Commands can be powerful
On some computers, the commands you issue on the command line are effectively system commands. This is different from some of the things you normally do through the graphical interface.
For example, if you delete a file by right-clicking on its icon on, it typically gets moved into Trash (so you can undo, and get it back).
But if you issue the delete command:
That simply deletes the file, and it will be harder to recover: no undo, no “moved to trash”.
It’s the same for Windows