How can I use advanced filtering with journalctl?
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How can I use advanced filtering with journalctl?
You can use advanced filtering in journalctl by utilizing options like --since, --until, and --grep. For example, to filter logs from the last hour, you can use journalctl --since "1 hour ago".
Can I filter logs by specific services?
Yes, you can filter logs by specific services using the -u option. For example, journalctl -u nginx.service will show logs only for the Nginx service.
Is it possible to combine multiple filters?
Absolutely! You can combine filters. For instance, journalctl -u nginx.service --since "2023-10-01" --grep "error" will show error logs for the Nginx service since October 1, 2023.
How do I output the logs in a specific format?
You can use the -o option to specify the output format. For example, journalctl -o json will output logs in JSON format.
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