DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.5 LTS" r-base-core: Installed: 3.4.4-1ubuntu1 Candidate: 3.4.4-1ubuntu1 Version table: *** 3.4.4-1ubuntu1 500 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status