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copied!<p>It's actually not to hard to do this manually. Let's say you have a library <code>whatever.rb</code> that you want to distribute as a gem.</p> <ol> <li>make a directory <code>lib</code> and put a copy of <code>whatever.rb</code> in <code>lib/whatever.rb</code>.</li> <li>make a file <code>whatever.gemspec</code>, and put the following in there, filling in the appropriate values:<pre><code> Gem::Specification.new do |spec| spec.name = 'the-name-of-your-gem' spec.version ='0.0.1'<br> # this is important - it specifies which files to include in the gem. spec.files = ["lib/whatever.rb"]<br> # optional, but useful to your users spec.summary = "A more longwinded description of your gem" spec.author = 'Your Name' spec.email = 'you@yourdomain.com' spec.homepage = '<a href="http://www.yourpage.com" rel="noreferrer">http://www.yourpage.com</a>'<br> # you did document with RDoc, right? spec.has_rdoc = true<br> # if you have a ruby forge project spec.rubyforge_project = 'your-project-name-on-rubyforge'<br> # if you have any dependencies on other gems, list them thusly spec.add_dependency('hpricot') spec.add_dependency('log4r', '>= 1.0.5') end </code></pre></li> <li>now, to build the gem, use the <code>gem build</code> command:<pre> % gem build whatever.gemspec Successfully built RubyGem Name: the-name-of-your-gem Version: 0.0.1 File: the-name-of-your-gem-0.0.1.gem % </pre></li> <li>You can test locally by using <code>gem install the-name-of-your-gem-0.0.1.gem</code> To use your library in a script then, simply do the following at the top:<pre><code> require 'rubygems' # puts gem libraries in the require path require 'whatever' # loads your library </code></pre></li> </ol> <p>For more on what the various settings in the <code>gemspec</code> file, check the <a href="http://rubygems.org/read/chapter/20" rel="noreferrer">GemSpec Reference</a>.</p> <p>Personally, I use rubygems a lot to package executable scripts as well, and find it very handy for that.</p>

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