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aptitude:tldr:ce170
The aptitude update
command is used in Debian-based operating systems, such as Ubuntu, to update the package lists for available software packages from the configured software repositories.
When you run aptitude update
, it contacts the repositories specified in the /etc/apt/sources.list
file, as well as any additional repository files in the /etc/apt/sources.list.d
directory, and checks if there are any updates or new packages available. It retrieves the latest information about the packages, their versions, dependencies, and any other relevant data.
By running aptitude update
regularly, you ensure that your system has the most up-to-date information about available software packages. This is essential before performing system upgrades or package installations, as it ensures you are working with the latest software versions and security updates. After running aptitude update
, you can use aptitude upgrade
or aptitude dist-upgrade
to actually upgrade the installed packages to their latest versions.