APT

Advanced package tool, or APT, is a user interface that works with core libraries to handle the installation and removal of software on Debian, and Debian-based linux distributions

Install a package

apt install PACKAGE

Uninstall a package

apt remove PACKAGE

Uninstall a package and delete configuration files

apt purge PACKAGE

List available packages

apt list [--installed | --upgradeable]

Search for a package

apt search PACKAGE

Provide information about a package

apt show PACKAGE

Remove installed dependencies that are no longer required

apt autoremove

Check for updates information from all configured sources

apt update

Install available upgrades

apt upgrade

Install available upgrades and remove obsolete packages

apt full-upgrade

Edit your sources.list file

apt edit-sources

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Configuration file

The source list /etc/apt/sources.list and the files contained in /etc/apt/sources.list.d/ are designed to support any number of active sources and a variety of source media. The files list one source per line (one-line style) or contain multiline stanzas defining one or more sources per stanza (deb822 style), with the most preferred source listed first (in case a single version is available from more than one source).

Files in this format have the extension .list. Each line specifying a source starts with a type (e.g. deb-src) followed by options and arguments for this type. Individual entries cannot be continued onto a following line. Empty lines are ignored, and a # character anywhere on a line marks the remainder of that line as a comment. Consequently an entry can be disabled by commenting out the entire line.