I am trying out wp-calypso which requires an addition to my localhost file. Via the terminal, I first typed
sudo vim /etc/localhost
which took me here
...
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"/etc/localhost" [New File]
I seem to be presented with a different screen than what's presented in the guide via https://www.howtogeek.com/howto/27350/beginner-geek-how-to-edit-your-hosts-file/
I then in the first line tried typing..
172.0.0.1 calypso.localhost
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-- INSERT --
and realized I had no idea what to do next. Am I even in the right file? What would be my next steps?