Level 4 · Expert · 7 min
Daemon
A background process that keeps the agent always-on. Survives logout, restarts itself.
A daemon is the agent that never sleeps. It runs in the background, outlives your terminal session, and comes back after a crash.
This is what turns a script you launch into a service that's just there. Message it at 3am and it answers.
A command runs once. A daemon runs until you stop it.
