To download files, we can simply use
Also to shut down computer we can use
Now to automatically shut down our computer after downloading the files we can use combination of both.
wget UrlOfTheFileYouWantToDownload && sudo halt
The above commands will only shut down the computer if
wget returns successfully.
wget UrlOfTheFileYouWantToDownload ; sudo halt
This command will run halt whether wget returns successfully or fails.
Do you need any help on Linux & Linux Commands? I'm happy to help you.