kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo journalctl --list-boots | cat
IDX BOOT ID                          FIRST ENTRY                 LAST ENTRY
  0 1df3ce8a6f9a416e887e3a000f66e398 Sat 2026-09-12 08:22:35 JST Sat 2026-09-12 08:28:27 JST
kazulog@sv1:~$ sudo apt update 2>&1 | tail -1
96 packages can be upgraded. Run 'apt list --upgradable' to see them.
kazulog@sv1:~$ apt-cache policy rsyslog | head -3
rsyslog:
  Installed: 8.2512.0-1ubuntu4.1
  Candidate: 8.2512.0-1ubuntu4.1
kazulog@sv1:~$ apt-cache show --no-all-versions rsyslog | grep -E '^(Version|Section|Priority):'
Priority: important
Section: admin
Version: 8.2512.0-1ubuntu4.1
kazulog@sv1:~$ systemctl is-active rsyslog
active
kazulog@sv1:~$ sudo ss -ulnp 'sport = :514'; echo "ss rc=$?"
State                  Recv-Q                  Send-Q                                   Local Address:Port                                   Peer Address:Port                 Process
ss rc=0
kazulog@sv1:~$ ls /var/log/
README            apport.log  auth.log  chrony                 cloud-init.log  dmesg     journal   landscape  private  sysstat              wtmp
alternatives.log  apt         btmp      cloud-init-output.log  dist-upgrade    dpkg.log  kern.log  lastlog    syslog   unattended-upgrades