Ubuntu 18.04.6 LTSです。OS更新しないとな。
$ sudo apt update && apt list --upgradable
:
cron/bionic-updates,bionic-security 3.0pl1-128.1ubuntu1.1 amd64 [upgradable from: 3.0pl1-128.1ubuntu1]
libsqlite3-0/bionic-updates,bionic-security 3.22.0-1ubuntu0.5 amd64 [upgradable from: 3.22.0-1ubuntu0.4]
rsyslog/bionic-updates,bionic-security 8.32.0-1ubuntu4.2 amd64 [upgradable from: 8.32.0-1ubuntu4]
$ sudo apt dist-upgrade -y
$ cat /var/run/reboot-required*
cat: '/var/run/reboot-required*': No such file or directory
うし