A server is a computer running a listening process.
In this interactive Infrastructure lesson from Stencel Academy you don't just read — you type real commands like ssh admin@web-01, uptime and watch the machine respond on a live, animated map. It is part of the free How Infrastructure Works course.
Builds on: The Round Trip.
hostname — Ask the machine its own name.whoami — You're a user account on someone else's computer now.w — Who's logged in — servers are shared places.exit — Hang up the session — the server keeps running without you.