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Show available package updates

harmless rootDebian and APTdebian, ubuntu
root@server
apt update && apt list --upgradable

Downloads the current package lists from the configured sources and then shows all installed packages for which an update is available. Each line contains the package name, source (suite), new version and installed version. Nothing is installed, which makes it well suited for estimating the scope before a maintenance window.

Note: apt list warns about unstable output when used in scripts. For scripts, apt-get -s upgrade is the better choice.

Also searched as

  • apt list upgradable
  • which updates are available
  • check updates before apt upgrade
  • list outdated packages debian

Related one-liners

All in Debian and APT

Hold a package at its current version (apt-mark hold)

#apt-mark hold mariadb-server
cautionDebian and APT

Release a held package for updates again

#apt-mark unhold mariadb-server
cautionDebian and APT

Show only pending security updates

$apt list --upgradable 2>/dev/null | grep -- -security
harmlessDebian and APT

Show the changelog of a package

$apt changelog openssl
harmlessDebian and APT

Check whether a reboot is required after updates

$if [ -f /var/run/reboot-required ]; then cat /var/run/reboot-required.pkgs; else echo "Kein Neustart vermerkt"; fi
harmlessDebian and APT

Compare installed and available package versions

$apt-cache policy nginx
harmlessDebian and APT

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