After updating your package information, the essential package 'ubuntu-minimal' could not be located. This may be because you have no official mirrors listed in your software sources, or because of excessive load on the mirror you are using. See /etc/apt/sources.list for the current list of configured software sources.In the case of an overloaded mirror, you may want to try the upgrade again later.
There's no need to manually mess with sources.list (which doesn't work anyway). Just prevent the OS from disabling third-party sources, because they include packages that the OS needs in order to complete the upgrade.
This search engine allows you to search the contents of Ubuntu distributions for any files (or just parts of file names) that are part of packages. You can also get a full list of files in a given package.
Keyword:
Display:
packages that contain files named like this
packages that contain files whose names end with the keyword
packages that contain files whose names contain the keyword
Distribution: focal focal-updates focal-backports jammy jammy-updates jammy-backports kinetic kinetic-updates kinetic-backports lunar lunar-updates lunar-backports mantic mantic-updates mantic-backports nobleArchitecture: i386 amd64 powerpc any
Adapted for hardy release. Removed the obsolete powerpc data for hardy. I'm currently evaluation if and how I shouldinclude information about ports.ubuntu.com packages here. Since archive.ubuntu.com is currently unusableI use nl.archive.ubuntu.com as source for the data until the situation normalizes again.
The downtime today was caused by some yet undiagnosed kernel troubles aftera faulty hard disk was exchanged. Sorry for any inconvenience.2008-02-19Switched packages.ubuntu.com to the newer codebase that also runson packages.debian.org. The two most important changes for usersare that most pages are now generated dynamically (which makesfor faster updates and more flexibility) and that the searchfunctions should be much faster now.Still waiting for a volunteer that optimizes the used stylesheets,I myself have not much talent in this area...2007-10-21Add hardy.2007-10-18Change default release to gutsy.2007-07-28Drop old releases since they also got dropped from archive.ubuntu.com.2007-04-29Feisty is released. Pages updated accordingly.2006-11-20
The translations of package descriptions I took from the DDTP (DebianDescriptions Translation Project) which seems to be rather inactivelately. Unless this is fully revived or another similar project iscreated there is little I can do on this front.
Ubuntu features a comprehensive package management system for installing, upgrading, configuring, and removing software. In addition to providing access to an organized base of over 60,000 software packages for your Ubuntu computer, the package management facilities also feature dependency resolution capabilities and software update checking.
Debian package files typically have the extension .deb, and usually exist in repositories which are collections of packages found online or on physical media, such as CD-ROM discs. Packages are normally in a pre-compiled binary format; thus installation is quick and requires no compiling of software.
Update the package index
The APT package index is essentially a database of available packages from the repositories defined in the /etc/apt/sources.list file and in the /etc/apt/sources.list.d directory. To update the local package index with the latest changes made in the repositories, type the following:
Upgrade packages
Installed packages on your computer may periodically have upgrades available from the package repositories (e.g., security updates). To upgrade your system, first, update your package index with sudo apt update, and then type:
Launching Aptitude with no command-line options will give you a menu-driven, text-based frontend to the APT system. Many of the common package management functions, such as installation, removal, and upgrade, can be performed in Aptitude with single-key commands, which are typically lowercase letters.
When Aptitude starts, you will see a menu bar at the top of the screen and two panes below the menu bar. The top pane contains package categories, such as New Packages and Not Installed Packages. The bottom pane contains information related to the packages and package categories.
Using Aptitude for package management is relatively straightforward, and the user interface makes common tasks simple to perform. The following are examples of common package management functions as performed in Aptitude:
Install Packages
To install a package, locate it via the Not Installed Packages package category by using the keyboard arrow keys and the Enter key. Highlight the desired package, then press the + key. The package entry should turn green, indicating it has been marked for installation. Now press g to be presented with a summary of package actions. Press g again, and the package will be downloaded and installed. When finished, press Enter to return to the menu.
Remove Packages
To remove a package, locate it in the Installed Packages package category by using the keyboard arrow keys and the Enter key. Highlight the package you want to remove, then press the - key. The package entry should turn pink, indicating it has been marked for removal. Now press g to be presented with a summary of package actions. Press g again, and the package will be removed. When finished, press Enter to return to the menu.
Upgrade Packages
To upgrade packages, first update the package index as detailed above, and then press the U key to mark all packages with updates. Now press g, which will present you with a summary of package actions. Press g again to begin the download and installation. When finished, press Enter to return to the menu.