Clear systemd journal /var/log/journal

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Systemd logs that are stored in /var/log/journal can be cleared by using journalctl command. Here are some useful commands

To find out the size of the log folder:

du -sh /var/log/journal/

Clear systemd journals older than n days:

journalctl --vacuum-time=30d

Clear systemd journals if they exceed n storage space:

journalctl --vacuum-size=1G