というわけでUbuntu 18.04.5 LTS
$ sudo sh -c 'apt update && apt dist-upgrade -y'
:
The following NEW packages will be installed:
linux-headers-4.15.0-154 linux-headers-4.15.0-154-generic
linux-image-4.15.0-154-generic linux-modules-4.15.0-154-generic
linux-modules-extra-4.15.0-154-generic
ちゃんと進んだからいっか
$ cat /var/run/reboot-required*
*** System restart required ***
linux-base
ですよねー
$ sync; sync; sync; sudo reboot
(-人-)