mastodon.zunda.ninja is one of the many independent Mastodon servers you can use to participate in the fediverse.
Zundon is a single user instance as home of @zundan as well as a test bed for changes of the code.

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zunda

Ubuntu 18.04.6 LTSわよ

$ sudo apt update && apt list --upgradable
:
intel-microcode/bionic-updates 3.20220510.0ubuntu0.18.04.1 amd64 [upgradable from: 3.20210608.0ubuntu0.18.04.1]
linux-generic/bionic-updates,bionic-security 4.15.0.187.173 amd64 [upgradable from: 4.15.0.184.172]
linux-headers-generic/bionic-updates,bionic-security 4.15.0.187.173 amd64 [upgradable from: 4.15.0.184.172]
linux-image-generic/bionic-updates,bionic-security 4.15.0.187.173 amd64 [upgradable from: 4.15.0.184.172]
linux-libc-dev/bionic-updates,bionic-security 4.15.0-187.198 amd64 [upgradable from: 4.15.0-184.194]
linux-signed-generic/bionic-updates,bionic-security 4.15.0.187.173 amd64 [upgradable from: 4.15.0.184.172]

マイクロコード?

$ sudo apt dist-upgrade -y
$ cat /var/run/reboot-required*
*** System restart required ***
linux-base

ほいほい

$ sync; sync; sync; sudo reboot

(-人-)

13:17:07 up 0 min, 0 users, load average: 4.37, 1.09, 0.37

ヨシ