Removing virtual box - how to use the code lines properly?

[JanetBiggar]

You copy and paste each line seperate into terminal followed by hitting enter.
After that you go to Menu, Settings, Session and Startup, Application Autostart and Untick vboxclient.
Restart laptop and you are good to go.

Thanks.

So since I did not do each separately I am presuming nothing happened and that I should now go and do this all over again (separately)?