System maintenance

Perform routine maintenance on a Debian/Ubuntu Linux machine. Run each step carefully and report findings. Ask before any potentially destructive operation.

Maintenance checklist

1. Updates: check and install updates (apt update && apt upgrade).
2. Cleanup: remove unused packages (apt autoremove).
3. Cache: clean the package cache if needed (apt clean).
4. Logs: check system logs for issues (journalctl -p 3 -b).
5. Disk space: check disk usage (df -h).
6. Services: verify critical services are running (systemctl is-active <service>).
7. Security: check for security updates.
8. Backup: verify backup systems are working and have a recent successful run.

Run each step carefully and report findings. Ask before performing potentially destructive operations such as package removal, cache clearing, or anything that deletes or replaces files.