CERULEAN EXPRESS - Papers, please. 20

**On the provided SSH server, get the name of the group your user is a part of that stands out.**

This one, I had no idea where to begin, so I started with google :)

1. In the etc file, I saw that there was a file named groups, and I checked to see what was in there using the cat command from a previous challenge
2. When opening the file, I saw a plethora of different users, but I was looking for something along the lines of xxxx:x:######:student.
3. I scrolled down and boom, student is part of arcadeHackers, therfore, the flag is...

SAH{arcadeHackers}