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journalctl: add "logs from last unit start" example (#11578) 

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>
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Ilya Mashchenko 2023-12-29 17:00:45 +02:00 committed by GitHub
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@ -7,10 +7,6 @@
`journalctl -b --priority={{3}}` `journalctl -b --priority={{3}}`
- Show all messages from last [b]oot:
`journalctl -b -1`
- Delete journal logs which are older than 2 days: - Delete journal logs which are older than 2 days:
`journalctl --vacuum-time={{2d}}` `journalctl --vacuum-time={{2d}}`
@ -23,6 +19,10 @@
`journalctl -u {{unit}}` `journalctl -u {{unit}}`
- Show logs for a given unit since the last time it started:
`journalctl _SYSTEMD_INVOCATION_ID=$(systemctl show --value --property=InvocationID {{unit}})`
- Filter messages within a time range (either timestamp or placeholders like "yesterday"): - Filter messages within a time range (either timestamp or placeholders like "yesterday"):
`journalctl --since {{now|today|yesterday|tomorrow}} --until {{YYYY-MM-DD HH:MM:SS}}` `journalctl --since {{now|today|yesterday|tomorrow}} --until {{YYYY-MM-DD HH:MM:SS}}`