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RubyGems is copyrighted free software by Chad Fowler, Rich Kilmer, Jim Weirich and others.

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gem.1

gem 1 "15 April 2015" "" ""
NAME
gem -- Command-line interface to RubyGems
SYNOPSIS
gem -h | --help

gem -v | --version

gem command [ arguments\.\.\. ] [ options\.\.\. ]

DESCRIPTION
A gem is a packaged Ruby application or library, while RubyGems is the premier ruby packaging system which is used to manage gems. Gems are managed on your computer using the gem command. You can install, remove, and query gem packages using the gem command.
FEATURES
* Easy Installation and removal of RubyGems packages and their dependencies * Management and control of local packages * Package dependency management * Query, search and list local and remote packages * Multiple version support for installed packages * Web-based interface to view the documentation for your installed gems * Easy to use interface for building gem packages * Simple server for distributing your own gem packages
OPTIONS

-h | --help Get the basic help message for gem command.

-v | --version Get the version of gem command.

command

build Build a gem from a gemspec

cert Manage RubyGems certificates and signing settings

check Check a gem repository for added or missing files

cleanup Clean up old versions of installed gems

contents Display the contents of the installed gems

dependency Show the dependencies of an installed gem

environment Display information about the RubyGems environment

fetch Download a gem and place it in the current directory

generate_index Generates the index files for a gem server directory

help Provide help on the 'gem' command

install Install a gem into the local repository

list Display local gems whose name starts with STRING

lock Generate a lockdown list of gems

mirror Mirror all gem files (requires rubygems-mirror)

outdated Display all gems that need updates

owner Manage gem owners of a gem on the push server

pristine Restores installed gems to pristine condition from files located in the gem cache

push Push a gem up to the gem server

query Query gem information in local or remote repositories

rdoc Generates RDoc for pre-installed gems

search Display remote gems whose name contains STRING

server Documentation and gem repository HTTP server

sources Manage the sources and cache file RubyGems will search for gems

specification Display gem specification (in yaml)

stale List gems along with access times

uninstall Uninstall gems from the local repository

unpack Unpack an installed gem to the current directory

update Update installed gems to the latest version

which Find the location of a library file you can require

yank Remove a pushed gem from the index

For more detailed help on a particular command with its arguments and options, use 'gem help command \'. For example: # gem help install Commands may be abbreviated, so long as they are unambiguous. e.g. 'gem i thor' is short for 'gem install thor'.

ENVIRONMENT

GEM_HOME Directory containing the master gem repository.

GEM_PATH Path list of directories containing gem repositories to be searched in addition to the GEM_HOME directory. The list should be delimited by the appropriate path separator ':'

GEM_SKIP List of gems should should not be loaded (normally used for development). The list should be delimited by the appropriate path separator ':'

http_proxy / HTTP_PROXY URL of the HTTP protocol proxy to be used to get out of the firewall. The lower case version will be used first.

make Name of the make program that should be used to build extensions.

HOME Home directory of the user (see below).

USERPROFILE Home directory of the user (used if HOME is not defined)

HOMEDRIVE Drive containing the user's home directory.

HOMEPATH Path to the user's home directory.

EXAMPLES

Example 1: Install 'thor', either from local directory or remote server

 # gem install thor

Example 2: Install 'thor', only from remote server

 # gem install thor --remote

Example 3: Install 'thor' from remote server, and run unit tests, and generate RDocs

 # gem install --remote thor --test --rdoc --ri

Example 4: Install 'thor', but only version 0.18.1, even if dependencies are not met, and into a specific directory

 # gem install thor --version 0.18.1 --force --install-dir $HOME/.gem/ruby/RUBY_LIB_VER

Example 5: List local gems whose name begins with 'D'

 # gem list D

Example 6: List local and remote gems whose name contains 'log'

 # gem search log --both

Example 7: List only remote gems whose name contains 'log'

 # gem search log --remote

Example 8: Uninstall 'thor'

 # gem uninstall thor

Example 9: See information about RubyGems

 # gem environment
.TE
SEE ALSO
ruby(1)
FILES
The following files specify the installation locations for Ruby:

/usr/ruby/RUBY_VER/lib/ruby/gems/RUBY_LIB_VER Default installation location for Ruby gems

~/.gem/ruby/RUBY_LIB_VER Per user location to install gems. This is automatically added to GEM_PATH.

/usr/ruby/RUBY_VER/lib/ruby/vendor_ruby/gems/RUBY_LIB_VER Location of gems installed by Solaris packages.

~/.gem/ruby/RUBY_LIB_VER/bin Per user location for gem executables.

/usr/ruby/RUBY_VER/bin Contains the Rubygems program with all other Ruby related programs. These programs are linked from /usr/bin. For example: /usr/ruby/RUBY_VER/bin/gem is linked from /usr/bin/gem19, and may be linked from /usr/bin/gem if the package mediator "ruby" is version "RUBY_VER" (see pkg(1)). Also contains executables for any installed gems that supply them (i.e.: thor, rails, etc).

NOTES
Detailed documentation for RubyGems is available at http://guides.rubygems.org/