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18.11.3. Using The Live View

When called without parameters, journalctl shows the full list of entries, starting with the oldest entry collected. With the live view, you can supervise the log messages in real time as new entries are continuously printed as they appear. To start journalctl in live view mode, type:
journalctl -f
This command returns a list of the ten most current log lines. The journalctl utility then stays running and waits for new changes to show them immediately.