AgentSkillsCN

systemd

通过 systemctl 与 journalctl 管理 Linux 服务

SKILL.md
--- frontmatter
name: systemd
description: "Manage Linux services with systemctl and journalctl"

systemd

Use bash and ssh tools to manage Linux services.

Setup

bash
# Check if installed (Linux only, pre-installed on most distros)
command -v systemctl && command -v journalctl

# No install needed — systemd is the init system on most modern Linux distributions.
# Not available on macOS or Windows.

Services

bash
systemctl status <service>
sudo systemctl start|stop|restart|reload <service>
sudo systemctl enable --now <service>
systemctl list-units --type=service --state=running
systemctl list-units --type=service --state=failed

Logs

bash
journalctl -u <service> --no-pager -n 50
journalctl -u <service> -f
journalctl -u <service> --since "1 hour ago"
journalctl -u <service> -p err
journalctl -b

Create Service

Use write_file to create /etc/systemd/system/<name>.service, then:

bash
sudo systemctl daemon-reload
sudo systemctl enable --now <name>

Tips

  • •Always daemon-reload after modifying unit files
  • •Use journalctl -f for real-time log following