Ubuntu 14.04.6 LTS+ESMわよ (ありがてえありがてえ!!
$ sudo apt update && apt list --upgradable
librack-ruby1.9.1/trusty-infra-security 1.5.2-3+deb8u3ubuntu1~esm6 all [upgradable from: 1.5.2-3+deb8u3ubuntu1~esm4]
ruby-rack/trusty-infra-security 1.5.2-3+deb8u3ubuntu1~esm6 all [upgradable from: 1.5.2-3+deb8u3ubuntu1~esm4]
$ sudo apt-get upgrade -y
$ cat /var/run/reboot-required*
cat: /var/run/reboot-required*: No such file or directory
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