PM2 — Process Manager

PM2 keeps processes alive, restarts them on crash, and provides monitoring/logging. Use for long-running services, persistent agents, background workers.

Not for detached terminals — use holdpty when you need PTY output, attach/view, or interactive sessions. Not for ephemeral tasks — use pi -p > file & for quick fire-and-forget agent runs.

Quick Reference

Start a process

# Simple
pm2 start server.js --name myapp

# With interpreter
pm2 start script.py --interpreter python3 --name worker