how to build a ruby gem

1. first you will creata a user in rubygem.org (https://rubygems.org/)

2. create the directory structure like this:

Java代码  

1. $ tree
2. .
3. ├── cc_hola.gemspec
4. └── lib
5. └── cc_hola.rb

you can use any name but you must keep consistency

3. in your .gemspec file

Java代码  

1. Gem::Specification.new do |s|
2. s.name        = ‘CcHola‘
3. s.version     = ‘0.0.0‘
4. s.date        = ‘2014-10-20‘
5. s.summary     = "A ruby gem build test!"
6. s.description = "A ruby gem build test!"
7. s.authors     = ["cckkll"]
8. s.email       = ‘[email protected]‘
9. s.files       = ["lib/cc_hola.rb"]
10. s.homepage    = ‘https://github.com/chengyuanheng‘
11. end

4. in your .rb file

Java代码  

1. class CcHola
2. def self.hi
3. puts "Hello World!"
4. end
5. end

5. compiled gem

Java代码  

1. $ gem build cc_hola.gemspec
2. Successfully built RubyGem
3. Name: CcHola
4. Version: 0.0.0
5. File: CcHola-0.0.0.gem
6. $ gem install ccHola-0.0.0.gem
7. Successfully installed CcHola-0.0.0
8. <span>1 gem installed</span>

6. test your gem

Java代码  

1. $ irb
2. > require "cc_hola"
3. => true
4. > CcHola.hi
5. Hello World!
6. => nil

7. release your gem

Java代码  

1. $ curl -u cckkll https://rubygems.org/api/v1/api_key.yaml >~/.gem/credentials
2. Enter host password for user ‘cckkll‘:
3. $ gem push CcHola-0.0.0.gem
4. Pushing gem to https://rubygems.org...
5. Successfully registered gem: CcHola (0.0.0)

you will find it in your rubygems account and all people can use it by

Java代码  

1. gem ‘CcHola‘, ‘~> 0.0.0‘