kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo grep -E 'kazulog-[ABCD]-' /var/log/syslog
2026-09-12T17:20:53+09:00 ubuntu kazulog-A-baseline: A: baseline before set-hostname
2026-09-12T17:21:00+09:00 ubuntu kazulog-B-afterset: B: after set-hostname, before reboot
2026-09-12T17:21:52+09:00 sv2new kazulog-C-afterreboot: C: after reboot following set-hostname
2026-09-12T17:23:10+09:00 sv2new kazulog-D-hostsfix-reboot: D: after rebooting with hand-edited /etc/hosts