utmp Format
From: support
Date: Thu Aug 01 2024 - 12:44:22 EST
I've noticed a difference in the size of the `utmp` struct between Linux
6.1.0-22-amd64 and 6.1.0-23-cloud-arm64. No doubt there are differences
between other unices as well. Is there a reason this is still a binary
log? On 6.1.0-22-amd64, it seems to be 384 bytes long, while the
average line length from `utmpdump` is only 125 bytes, so it's not a
space savings.
My primary concern is forensics. There is no consistent and reliable
way to read wtmp/btmp outside of the installation that created it.
JS