$ sudo apt policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic/main i386 Packages
     release v=18.04,o=LP-PPA-deadsnakes,a=bionic,n=bionic,l=New Python Versions,c=main,b=i386
     origin ppa.launchpad.net
 500 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic/main amd64 Packages
     release v=18.04,o=LP-PPA-deadsnakes,a=bionic,n=bionic,l=New Python Versions,c=main,b=amd64
     origin ppa.launchpad.net
 500 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic/main i386 Packages
     release v=18.04,o=LP-PPA-certbot-certbot,a=bionic,n=bionic,l=Certbot PPA,c=main,b=i386
     origin ppa.launchpad.net
 500 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic/main amd64 Packages
     release v=18.04,o=LP-PPA-certbot-certbot,a=bionic,n=bionic,l=Certbot PPA,c=main,b=amd64
     origin ppa.launchpad.net
 500 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=multiverse,b=i386
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=multiverse,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=universe,b=i386
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=universe,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/restricted i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=restricted,b=i386
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=restricted,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=main,b=i386
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-security,n=bionic,l=Ubuntu,c=main,b=amd64
     origin security.ubuntu.com
 100 http://ua.archive.ubuntu.com/ubuntu bionic-backports/universe i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-backports,n=bionic,l=Ubuntu,c=universe,b=i386
     origin ua.archive.ubuntu.com
 100 http://ua.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-backports,n=bionic,l=Ubuntu,c=universe,b=amd64
     origin ua.archive.ubuntu.com
 100 http://ua.archive.ubuntu.com/ubuntu bionic-backports/main i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-backports,n=bionic,l=Ubuntu,c=main,b=i386
     origin ua.archive.ubuntu.com
 100 http://ua.archive.ubuntu.com/ubuntu bionic-backports/main amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-backports,n=bionic,l=Ubuntu,c=main,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=multiverse,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=multiverse,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=universe,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=universe,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/restricted i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=restricted,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/restricted amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=restricted,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=main,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic-updates,n=bionic,l=Ubuntu,c=main,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/multiverse i386 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=multiverse,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=multiverse,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/universe i386 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=universe,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=universe,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/restricted i386 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=restricted,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/restricted amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=restricted,b=amd64
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/main i386 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=main,b=i386
     origin ua.archive.ubuntu.com
 500 http://ua.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
     release v=18.04,o=Ubuntu,a=bionic,n=bionic,l=Ubuntu,c=main,b=amd64
     origin ua.archive.ubuntu.com
Pinned packages: