kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo grep 192.168.100.1 /var/log/syslog | tail -3
2026-09-12T08:30:05.402731+09:00 192.168.100.1 70: R1: *Sep 11 23:30:04.049: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: kazulog] [Source: 10.100.3.1] [localport: 22] at 23:30:04 UTC Fri Sep 11 2026
2026-09-12T08:30:07.627711+09:00 192.168.100.1 71: R1: *Sep 11 23:30:07.482: %KAZULOG-6-TESTMSG: Message from tty1(user id: kazulog): kazulog-test-message from R1
2026-09-12T08:30:08.627134+09:00 192.168.100.1 72: R1: *Sep 11 23:30:07.514: %SYS-6-LOGOUT: User kazulog has exited tty session 1(10.100.3.1)