Hello,

Once you run the wget command, you can check if the file was downloaded with the ls -lah command. This will show you the content of your current folder and then once you know the exact name of the file, you can use it to run the mv command.

For more information on Linux commands in general, I could suggest taking a look at the following tutorial:

https://www.digitalocean.com/community/tutorials/an-introduction-to-linux-basics

Let me know how it goes.
Regards,
Bobby