Ubuntu 18.04.6 LTSわよ
$ sudo apt update && apt list --upgradable
login/bionic-updates 1:4.5-1ubuntu2.3 amd64 [upgradable from: 1:4.5-1ubuntu2.2]
passwd/bionic-updates 1:4.5-1ubuntu2.3 amd64 [upgradable from: 1:4.5-1ubuntu2.2]
snapd/bionic-updates 2.55.5+18.04 amd64 [upgradable from: 2.54.3+18.04.2ubuntu0.2]
ubuntu-core-launcher/bionic-updates 2.55.5+18.04 amd64 [upgradable from: 2.54.3+18.04.2ubuntu0.2]
uidmap/bionic-updates 1:4.5-1ubuntu2.3 amd64 [upgradable from: 1:4.5-1ubuntu2.2]
お
$ sudo apt dist-upgrade -y
$ cat /var/run/reboot-required*
cat: '/var/run/reboot-required*': No such file or directory
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