mirror of https://github.com/CrimsonTome/tldr.git
740 B
740 B
journalctl
Query the systemd journal.
- Show all messages from this boot:
journalctl -b
- Show all messages from last boot:
journalctl -b -1
- Follow new messages (like
tail -f
for traditional syslog):
journalctl -f
- Show all messages by a specific unit:
journalctl -u {{unit}}
- Show messages by a specific unit in last 15m:
journalctl -u {{unit}} --since {{-15m}}
- Filter messages within a time range (either timestamp or placeholders like "yesterday"):
journalctl -u {{unit}} --since {{now|today|yesterday|tomorrow}} --until {{YYYY-MM-DD HH:MM:SS}}
- Show all messages by a specific process:
journalctl _PID={{pid}}
- Show all messages by a specific executable:
journalctl {{path/to/executable}}