apt-cache policy

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• apt-cache policy List source repository configured included priorities of each source.

Examples

apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-security,n=focal,l=Ubuntu,c=multiverse,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-security,n=focal,l=Ubuntu,c=universe,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-security,n=focal,l=Ubuntu,c=restricted,b=amd64
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-security,n=focal,l=Ubuntu,c=main,b=amd64
     origin security.ubuntu.com
 100 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-backports,n=focal,l=Ubuntu,c=universe,b=amd64
     origin archive.ubuntu.com
 100 http://archive.ubuntu.com/ubuntu focal-backports/main amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-backports,n=focal,l=Ubuntu,c=main,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-updates,n=focal,l=Ubuntu,c=multiverse,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-updates,n=focal,l=Ubuntu,c=universe,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-updates,n=focal,l=Ubuntu,c=restricted,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     release v=20.04,o=Ubuntu,a=focal-updates,n=focal,l=Ubuntu,c=main,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages
     release v=20.04,o=Ubuntu,a=focal,n=focal,l=Ubuntu,c=multiverse,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
     release v=20.04,o=Ubuntu,a=focal,n=focal,l=Ubuntu,c=universe,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal/restricted amd64 Packages
     release v=20.04,o=Ubuntu,a=focal,n=focal,l=Ubuntu,c=restricted,b=amd64
     origin archive.ubuntu.com
 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
     release v=20.04,o=Ubuntu,a=focal,n=focal,l=Ubuntu,c=main,b=amd64
     origin archive.ubuntu.com
Pinned packages:

apt-cache policy nginx-core
nginx-core:
  Installed: 1.14.0-0ubuntu1.7
  Candidate: 1.14.0-0ubuntu1.7
  Version table:
 *** 1.14.0-0ubuntu1.7 500
        500 http://mirrors.digitalocean.com/ubuntu bionic-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
        100 /var/lib/dpkg/status
     1.14.0-0ubuntu1 500
        500 http://mirrors.digitalocean.com/ubuntu bionic/main amd64 Packages

Related terms

• /etc/apt/sources.list
• cat /etc/apt/sources.list /etc/apt/sources.list.d/*
• apt install

See also

• APT: wajig, apt-cache, add-apt-repository PPA, apt [ install | remove |purge | show | list | changelog | update | upgrade], do-release-upgrade, apt-mark, apt full-upgrade, sources.list, APT Automatic updates, unattended-upgrade, apt-transport-https, apt-get update, /etc/apt/, /etc/apt/apt.conf.d/50unattended-upgrades, /etc/apt/apt.conf.d/, /etc/apt/apt.conf.d/20auto-upgrades, apt-file, apt-utils

http://manpages.ubuntu.com/manpages/xenial/man8/apt-cache.8.html#options