gem - line interface to RubyGems
gem -h|--help gem -v|--version gem command [ arguments... ] [ options... ]
gem(1) gem(1)
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 depen-
dencies
* 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 set-
tings
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 environ-
ment
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outdated Display all gems that need updates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 reposi-
tories
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 argu-
ments 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 exten-
sions.
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 dependen-
cies are not met, and into a specific directory
# gem install thor --version 0.18.1 --force --install-dir $HOME/.gem/ruby/2.1.0
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
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/ruby-21 |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
ruby(1)
FILES
The following files specify the installation locations for Ruby:
/usr/ruby/2.1/lib/ruby/gems/2.1.0
Default installation location for Ruby gems
~/.gem/ruby/2.1.0
Per user location to install gems. This is automatically added
to GEM_PATH.
/usr/ruby/2.1/lib/ruby/vendor_ruby/gems/2.1.0
Location of gems installed by Solaris packages.
~/.gem/ruby/2.1.0/bin
Per user location for gem executables.
/usr/ruby/2.1/bin
Contains the Rubygems program with all other Ruby related pro-
grams. These programs are linked from /usr/bin. For example:
/usr/ruby/2.1/bin/gem is linked from /usr/bin/gem19, and may be
linked from /usr/bin/gem if the package mediator "ruby" is ver-
sion "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/
This software was built from source available at
https://java.net/projects/solaris-userland. The original community
source was downloaded from http://cache.ruby-
lang.org/pub/ruby/2.1/ruby-2.1.6.tar.gz
Further information about this software can be found on the open source
community website at http://www.ruby-lang.org/.
15 April 2015 gem(1)