Diagnostics: Difference between revisions
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Created page with "===List all system poweron and poweroff and what caused them=== last -x | grep -E 'shutdown|reboot'" |
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===List all system | ===List all system power on/off and uptime for each boot=== | ||
last -x | grep -E 'shutdown|reboot' | last -x | grep -E 'shutdown|reboot' | ||
===Show system logs=== | |||
From current boot | |||
journalctl -b | |||
From a specific boot | |||
journalctl -b <entry> | |||
Boot entry can be an offset, e.g. -1 will give you 1 boot earlier | |||
journalctl -b -1 | |||
Same command, but limited to only showing kernel logs, add -k | |||
journalctl -k -b -1 | |||
Time filtering | |||
journalctl --since "2026-08-01 08:00:00" --until "2026-08-01 12:00:00" | |||
===Show logs of specific systemd service=== | |||
journalctl -u containerd.service | |||
Latest revision as of 13:22, 18 August 2026
List all system power on/off and uptime for each boot
last -x | grep -E 'shutdown|reboot'
Show system logs
From current boot
journalctl -b
From a specific boot
journalctl -b <entry>
Boot entry can be an offset, e.g. -1 will give you 1 boot earlier
journalctl -b -1
Same command, but limited to only showing kernel logs, add -k
journalctl -k -b -1
Time filtering
journalctl --since "2026-08-01 08:00:00" --until "2026-08-01 12:00:00"
Show logs of specific systemd service
journalctl -u containerd.service
