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Make your own gem Gems with Extensions Name your gem Publishing your gem Security Practices SSL Certificate Update Patterns Specification Reference Command Reference Ruby Gems API Ruby API Run your own gem server Resources Contributing to Ruby Gems Frequently Asked Questions Plugins Credits The Ruby Gems software allows you to easily download, install, and use ruby software packages on your system.

The software package is called a “gem” and contains a package Ruby application or library.

Gems can be used to extend or modify functionality in Ruby applications.

Some gems provide command line utilities to help automate tasks and speed up your work.

Make your own gem Gems with Extensions Name your gem Publishing your gem Security Practices SSL Certificate Update Patterns Specification Reference Command Reference Ruby Gems API Ruby API Run your own gem server Resources Contributing to Ruby Gems Frequently Asked Questions Plugins Credits The build command allows you to create a gem from a ruby gemspec.

The best way to build a gem is to use a Rakefile and the Gem:: Package Task which ships with Ruby Gems.

The gemspec can either be created by hand or extracted from an existing gem with gem spec: The cert command manages signing keys and certificates for creating signed gems.

Your signing certificate and private key are typically stored in ~/.gem/gem-public_and ~/.gem/gem-private_respectively.

To build a certificate for signing gems: The cleanup command removes old versions of gems from GEM_HOME that are not required to meet a dependency.If a gem is installed elsewhere in GEM_PATH the cleanup command won’t delete it.If no gems are named all gems in GEM_HOME are cleaned.Display the contents of the installed gems The contents command lists the files in an installed gem.The listing can be given as full file names, file names without the installed directory prefix or only the files that are requireable.Show the dependencies of an installed gem The dependency commands lists which other gems a given gem depends on.