kazulog@sv2:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv2:~$ sudo journalctl --list-boots | cat
IDX BOOT ID                          FIRST ENTRY                 LAST ENTRY
  0 043a3b3c5ba04308a982bee36b71c014 Sat 2026-09-12 09:59:42 JST Sat 2026-09-12 10:01:15 JST
kazulog@sv2:~$ which tftp; echo "which rc=$?"
which rc=1
kazulog@sv2:~$ apt-cache policy tftp-hpa | head -3
tftp-hpa:
  Installed: (none)
  Candidate: 5.3+20251209-2