1 files changed, 16 insertions, 0 deletions
diff --git a/lib/rubygems/commands/specification_command.rb b/lib/rubygems/commands/specification_command.rb
index b40dfd5f3c..d96c8b8627 100644
--- a/lib/rubygems/commands/specification_command.rb
+++ b/lib/rubygems/commands/specification_command.rb
@@ -50,6 +50,22 @@ FIELD         name of gemspec field to show
     "--local --version '#{Gem::Requirement.default}' --yaml"
   end
 
+  def description # :nodoc:
+    <<-EOF
+The specification command allows you to extract the specification from
+a gem for examination.
+
+The specification can be output in YAML, ruby or Marshal formats.
+
+Specific fields in the specification can be extracted in YAML format:
+
+  $ gem spec rake summary
+  --- Ruby based make-like utility.
+  ...
+
+    EOF
+  end
+
   def usage # :nodoc:
     "#{program_name} [GEMFILE] [FIELD]"
   end