journalctl: add --vacuum-time example (#8135)

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CleanMachine1 2022-06-18 21:55:44 +01:00 committed by GitHub
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@ -3,17 +3,17 @@
> Query the systemd journal.
> More information: <https://manned.org/journalctl>.
- Show all messages from this [b]oot:
- Show all messages with priority level 3 (errors) from this [b]oot:
`journalctl -b`
`journalctl -b --priority={{3}}`
- Show all messages from last [b]oot:
`journalctl -b -1`
- Show all messages with priority level 3 (errors) from this [b]oot:
- Delete journal logs which are older than 2 days:
`journalctl -b --priority={{3}}`
`journalctl --vacuum-time={{2d}}`
- [f]ollow new messages (like `tail -f` for traditional syslog):