Ruby gems
From wikinotes
A package manager for ruby libraries.
You may also be interested in the ruby gemfile, and ruby bundler.
Documentation
cli docs https://guides.rubygems.org/command-reference/ homepage/repo https://rubygems.org/ github https://github.com/rubygems/rubygems gemspec file ref https://guides.rubygems.org/specification-reference/ wikipedia https://en.wikipedia.org/wiki/RubyGems
Environment
GEM_HOME= # where gems are installed GEM_PATH=/a/b:/c/d:/e/f # where gems are found
Notes
ruby gem projects ruby gem package management
Usage
gem -h gem list -h # help for subcommand gem search <pkg> # search for gem gem install ${PKG} \ -v 1.8 `# gem-version (also supports >=, ~>)` \ --user-install `# user install (rather than system install)` \ --platform ruby `# specify platform for compiled gems, or ruby to build from src` \ gem list --local # list installed gems/versions gem list -i ${GEM} -v ${VERSION} # list installed gems gem which \*${GEM}\* # list install location of gem gem unpack file.gem # extract gem
If building packages with extensions, you can pass additional commandline arguments. See ruby extensions for more details.# You may need to issue additional params to ruby # when building a package. These are passed following '--' # ex: # gem install -- [arguments passed to ruby interp] gem install -- \ --with-opt-dir=/opt/lib/package \ # add directory with subdirs 'include/' and 'lib/' for C headers/libs.
File Structure
gem_name/ bin/ gem_name lib/ gem_name.rb test/ test_gem_name.rb README Rakefile gem_name.gemspec