I have arch linux failing on a device. The device doesn't have any screen, it doesn't respond to network. So I take its SD card, insert it in ubuntu desktop, see a fresh system.journal there and... How to see what is inside?
From the Arch Linux documentation I know that I can do:
strings /mnt/arch/var/log/journal/.../system.journal | grep -i message
But it is really basic. The question is:
Is there more convenient way to inspect system.journal from another system, than using strings? Can I for example specify the file to read for journalctl?