Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/update-motd.d/91-release-upgrade

 #!/bin/sh

# if the current release is under development there won't be a new one
if [ "$(lsb_release -sd | cut -d' ' -f4)" = "(development" ]; then
    exit 0
fi
if [ -x /usr/lib/ubuntu-release-upgrader/release-upgrade-motd ]; then
    exec /usr/lib/ubuntu-release-upgrader/release-upgrade-motd
fi