Portage

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sys-apps/portage is Gentoo's package manager, and is installed by default as part of the stage3 install. See the Gentoo Handbook for more details.

Overlays

In addition to the official repository (colloquially known as "portage tree" because of its traditional placement in /usr/portage/), there are additional repositories which in Gentoo are called overlays.

• Gentoo Overlays: Users' Guide
• Layman homepage
• Browse overlays

You can search through the ebuilds available in the overlays on http://overlays.gentoo.org/ by using eix.

emerge

emerge is the command-line interface to the Portage system.

# emerge -atv package

These are the packages that would be merged, in reverse order:

Calculating dependencies... done! [ebuild U ] category/package-3.0-r2 [2.0] USE="enabled -disabled toggled* new% (-unavailable)" MAKE_OPTIONS="-disabled" 777 kB [ebuild UD ] category/package-2.0 [3.0] 777 kB [ebuild R ] category/package-1.0 777 kB [ebuild N ] category/package-0.5 777 kB

Total: 4 packages (1 new, 1 reinstall, 1 upgrade, 1 downgrade), Size of downloads: 3108 kB

Would you like to merge these packages? [Yes/No]

See also

Relevant Gentoo Wiki pages

• Useful portage tools
• Binary package guide
• Portage tips
• /etc/portage configuration files
• Repository format
• ebuild
• PMS (Package Manager Specification)
• Overlay
• Category:Portage

Official docs

Related sections of the Gentoo Handbook

• A Portage Introduction
• USE flags
• Portage Features
• Files and Directories
• Configuring through Variables
• Mixing Software Branches
• Additional Portage Tools

Other official docs

• Compilation Optimization Guide
• Gentoolkit
• Portage-utils

External resources

• "Portage" category in the community Gentoo Wiki