🥸Become a systemd Monitoring Ninja!🥷

1️⃣ Check All Active and Inactive Services

systemctl list-units --type=service --all

🔹 This shows all services, whether active, inactive, or failed.

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2️⃣ Check All Active Timers

systemctl list-timers --all

🔹 This displays all systemd timers, including when they last ran and when they will run next.

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3️⃣ Show the Status of a Specific Service

systemctl status <service-name>

🔹 Example: Check the status of cron:

systemctl status cron.service

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4️⃣ Show the Status of a Specific Timer

systemctl status <timer-name>.timer

🔹 Example: Check a custom-reboot timer:

systemctl status custom-reboot.timer

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5️⃣ Check Failed Units Only

systemctl --failed

🔹 This only shows failed services, helping with troubleshooting.

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6️⃣ Get a Summary of All Services (Including Failed Ones)

systemctl list-units --type=service --state=failed

🔹 Shows only failed services.

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7️⃣ Check If a Specific Service is Enabled at Boot

systemctl is-enabled <service-name>

🔹 Example: Check if ssh starts on boot:

systemctl is-enabled ssh

• Output:

  • enabled ✅ → Runs on boot

  • disabled ❌ → Does not run on boot

  • static 🔄 → Dependency of another service

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8️⃣ Get a One-Liner Summary of All Systemd Services

systemctl list-units --type=service --no-pager

🔹 This gives a concise list of all services.

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Bonus: Interactive TUI (ncurses) Tools

If you prefer a ncurses-based interface:

1️⃣ systemd-cgtop → Shows systemd resource usage (CPU, Memory, etc.)

systemd-cgtop

2️⃣ systemd-analyze blame → Shows slow-starting services

systemd-analyze blame

3️⃣ systemd-analyze critical-chain → Shows slow dependencies in the boot sequence

systemd-analyze critical-chain

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Summary Table 📊

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🚀 Now you're a systemd monitoring ninja! 😎