Ubuntu 14.04.6 LTS+ESMもいってみよー
$ sudo apt update && apt list --upgradable
:
zlib1g/trusty-infra-security 1:1.2.8.dfsg-1ubuntu1.1+esm1 i386 [upgradable from: 1:1.2.8.dfsg-1ubuntu1.1]
$ sudo apt-get upgrade -y
ありがてえありがてえ
$ cat /var/run/reboot-required*
cat: /var/run/reboot-required*: No such file or directory