I'm running Manjaro KDE and the folder /var/lib/systemd/coredump/ is around 500mb. What is it there for, and is it safe to delete it? sudo systemctl status shows running and no failed units.
sudo systemctl status
/var/lib/systemd/coredump is where systemd.coredump stores core dumps. You can list them with coredumpctl.
If you don’t plan on investigating your core dumps any further, you can delete the contents of the directory.