However, the upgrade command can proceed if there are available upgrades already on the system. The following packages have been kept back:Ġ upgraded, 0 newly installed, 0 to remove and 1 not upgraded Without any available update on the system, the apt-get command doesn’t upgrade any package: $ sudo apt-get upgrade Usually, the update command precedes the upgrade command. Of course, it gets the data from the sources in the /etc/apt/sources.list file. The command apt-get upgrade installs the newest versions of all packages on the system. Otherwise, the data for the sources in the /etc/apt/sources.list file remains the same, in which case apt list –upgradable might not show any available updates: Note that it’s important to run apt-get update first before running apt list –upgradable. In addition, it shows the new upgrade version and gives a hint on the version change like in the example: Now, the output of this command is a list of all upgradable packages. To list all the packages available for updating, assuming we’ve already run apt-get update, we can use the apt list –upgradable command: $ apt list -upgradableĭbus-user-session/focal-updates,focal-security 1.12.16-2ubuntu2.3 amd64 ĭbus-x11/focal-updates,focal-security 1.12.16-2ubuntu2.3 amd64 ĭbus/focal-updates,focal-security 1.12.16-2ubuntu2.3 amd64 ĭistro-info-data/focal-updates,focal-updates 0.43ubuntu1.11 all įirefox-locale-en/focal-updates,focal-security 107.0+build2-0ubuntu0.20.04.1 amd64 While the update command refreshes the package cache, it doesn’t list all the possible updates. Inactive sources are commented out using a # at the beginning of the line.
The sources set on the system are defined via deb-src. N: See apt-secure(8) manpage for repository creation and user configuration details.Į: The repository ' disco-security Release' does not have a Release file.Į: The repository ' focal Release' does not have a Release file.Į: The repository ' disco-updates Release' does not have a Release file.Į: The repository ' disco-backports Release' does not have a Release file.We can view the content of the sources.list file using the cat command: $ cat /etc/apt/sources.list N: Updating from such a repository can't be done securely, and is therefore disabled by default. (i did try to mess around with the repository settings in the meantime adding a ppa wich didnt help and potentially made it worse but i dont know how to revert the repository state back to its original state)Į: The repository ' disco Release' does not have a Release file. Unfortunately sudo apt-get update gives me this: Im running armbian on a X96 MAX (S905X2) android tv box as a pihole server.
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