whereami

If you wake up from amnesia, and found yourself near computer, first thing you need to type is whoami. After that, you probaly want to type history to recall whats happened. Third logical question would be whereami, but unfortunatelly command does not exist by default. So prepare yourself to sudden amnesia now, and add to your aliases:

alias whereami='curl ifconfig.co/json'

It will show your ip and location. Also useful to check which VPN are you using.