Check for pending upgrades on Ubuntu.
Update package index.
$ sudo apt update
Hit:1 http://deb.debian.org/debian bullseye InRelease Get:2 http://security.debian.org/debian-security bullseye-security InRelease [48.4 kB] Get:3 http://archive.raspberrypi.org/debian bullseye InRelease [23.6 kB] Get:4 http://deb.debian.org/debian bullseye-updates InRelease [44.1 kB] Get:5 http://security.debian.org/debian-security bullseye-security/main armhf Packages [218 kB] Get:6 http://security.debian.org/debian-security bullseye-security/main arm64 Packages [218 kB] Get:7 http://security.debian.org/debian-security bullseye-security/main Translation-en [145 kB] Get:8 https://pkgs.tailscale.com/stable/debian bullseye InRelease Get:9 http://archive.raspberrypi.org/debian bullseye/main arm64 Packages [302 kB] Get:10 https://pkgs.tailscale.com/stable/debian bullseye/main armhf Packages [7,110 B] Get:11 http://archive.raspberrypi.org/debian bullseye/main armhf Packages [311 kB] Get:12 https://pkgs.tailscale.com/stable/debian bullseye/main all Packages [354 B] Get:13 https://pkgs.tailscale.com/stable/debian bullseye/main arm64 Packages [7,105 B] Fetched 1,332 kB in 2s (760 kB/s) Reading package lists... Done Building dependency tree... Done Reading state information... Done 21 packages can be upgraded. Run 'apt list --upgradable' to see them.
I will use apt-check utility provided by the update-notifier-common package.
$ dpkg-query -S /usr/lib/update-notifier/apt-check
update-notifier-common: /usr/lib/update-notifier/apt-check
$ apt info update-notifier-common
Package: update-notifier-common Version: 3.192.54.5 Priority: optional Section: gnome Source: update-notifier Origin: Ubuntu Maintainer: Michael Vogt <michael.vogt@ubuntu.com> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 1 503 kB Pre-Depends: dpkg (>= 1.15.7.2), apt (>= 1.1~) Depends: python3:any, python3-apt, python3-dbus, python3-debian, python3-debconf | debconf (<< 1.5.64~), python3-distro-info, lsb-release, patch, update-manager-core (>= 1:17.04.2) Recommends: libpam-modules (>= 1.0.1-9ubuntu3) Suggests: policykit-1 Replaces: update-notifier (<< 0.75.1) Task: ubuntu-desktop-minimal, ubuntu-desktop, cloud-image, server, ubuntu-server-raspi, xubuntu-desktop, lubuntu-desktop, ubuntukylin-desktop, ubuntu-mate-core, ubuntu-mate-desktop, ubuntu-budgie-desktop, ubuntu-budgie-desktop-raspi Phased-Update-Percentage: 90 Download-Size: 185 kB APT-Sources: http://pl.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages Description: Files shared between update-notifier and other packages Apt setup files and reboot notification scripts shared between update-notifier and other packages, notably for server use cases.
Display usage information.
$ /usr/lib/update-notifier/apt-check --help
Usage: apt-check [options]
Options:
-h, --help show this help message and exit
-p, --package-names Show the packages that are going to be
installed/upgraded
--human-readable Show human readable output on stdout
--security-updates-unattended
Return the time in days when security updates are
installed unattended (0 means disabled)
Display heman readable summary.
$ /usr/lib/update-notifier/apt-check --human-readable
9 updates can be applied immediately. 4 of these updates are standard security updates. To see these additional updates run: apt list --upgradable
List upgradeable packages.
$ /usr/lib/update-notifier/apt-check --package-names
gnome-initial-setup google-chrome-stable git alsa-ucm-conf gitk linux-firmware haproxy ubuntu-advantage-tools git-man
Display the number of updates that can be applied immediately and the number of included standard security updates using machine friendly format.
$ /usr/lib/update-notifier/apt-check
9;4
