Package Manager

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Package Managers allow users to install, upgrade and uninstall Packages from Software Repositories on GNU/Linux. Package Managers are akin to the "app stores" available on several other non-FLOSS platforms, though this feature in GNU/Linux predates "app stores" by several decades.

There are several Package Managers available. Each distro comes with one installed, but it is possible to install different Package Managers as well. Package Managers may utilize the CLI or GUI.

An example of a Package Manager is APT, which has several GUI front-ends, including Synaptic Package Manager. Another is yum, which also has GUI front-ends available, such as yumex (see previous link).

Using your distro's Package Manager is easier and more secure than installing software from other sources.