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journalctl:tldr:56e95
journalctl: [f]ollow new messages (like `tail -f` for traditional syslog).
$ journalctl -f
try on your machine
The command "journalctl -f" is used to continuously follow the system journal in real-time. Here is a breakdown of its components:
- "journalctl" is a command-line utility used to view, query, and manipulate the systemd journal, which is a centralized log that stores various system activity and event logs.
- "-f" is a short form of "--follow", which instructs journalctl to continuously display newly appended messages as they are written to the journal. It "follows" the journal in real-time, similar to the "tail -f" command used for regular log files.
By running "journalctl -f" in the terminal, you can monitor the live output of the system journal, seeing the recent log entries continuously as they are added. This can be helpful for real-time troubleshooting, monitoring system activity, or observing events as they occur.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.