Vider les journaux de fonctionnement gérés par systemd
$ sudo journalctl --disk-usage
Archived and active journals take up 1.2G in the file system.
$ sudo journalctl --vacuum-size=500M
$ sudo journalctl --disk-usage
Archived and active journals take up 488.1M in the file system.
To set a permanent limit :
$ sudo vim /etc/systemd/journald.conf
[Journal]
MaxRetentionSec=1month
SystemMaxUse=50M
$ sudo systemctl restart systemd-journald