2014-02-25 02:13:55 +00:00
|
|
|
# journalctl
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
> Query the systemd journal.
|
2014-02-25 02:13:55 +00:00
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Show all messages from this boot:
|
2014-02-25 02:13:55 +00:00
|
|
|
|
|
|
|
|
`journalctl -b`
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Show all messages from last boot:
|
2014-02-25 02:13:55 +00:00
|
|
|
|
|
|
|
|
`journalctl -b -1`
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Follow new messages (like `tail -f` for traditional syslog):
|
2014-02-25 02:13:55 +00:00
|
|
|
|
|
|
|
|
`journalctl -f`
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Show all messages by a specific unit:
|
2014-02-25 02:13:55 +00:00
|
|
|
|
|
|
|
|
`journalctl -u {{unit}}`
|
|
|
|
|
|
2019-07-31 12:45:03 +01:00
|
|
|
- Filter messages within a time range (either timestamp or placeholders like "yesterday"):
|
|
|
|
|
|
2019-08-17 05:30:03 +01:00
|
|
|
`journalctl --since {{now|today|yesterday|tomorrow}} --until {{YYYY-MM-DD HH:MM:SS}}`
|
2019-07-31 12:45:03 +01:00
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Show all messages by a specific process:
|
2014-02-25 02:13:55 +00:00
|
|
|
|
|
|
|
|
`journalctl _PID={{pid}}`
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Show all messages by a specific executable:
|
2014-02-25 02:13:55 +00:00
|
|
|
|
2018-02-10 14:42:11 +00:00
|
|
|
`journalctl {{path/to/executable}}`
|
