おおっと (Ubuntu 18.04)
$ sudo apt update; sudo apt dist-upgrade -y
:
Preparing to unpack .../libssl1.1_1.1.1-1ubuntu2.1~18.04.5_amd64.deb ...
Unpacking libssl1.1:amd64 (1.1.1-1ubuntu2.1~18.04.5) over (1.1.1-1ubuntu2.1~18.04.4) ...
Preparing to unpack .../openssl_1.1.1-1ubuntu2.1~18.04.5_amd64.deb ...
Unpacking openssl (1.1.1-1ubuntu2.1~18.04.5) over (1.1.1-1ubuntu2.1~18.04.4) ...
:
$ cat /var/run/reboot-required*
*** System restart required ***
libssl1.1
$ sync; sync; sync; sudo reboot
(-人-)