ohai を使って色々取得

all.rb

require "rubygems"
require "bundler/setup"
require 'ohai'

oh = Ohai::System.new
oh.all_plugins

YAML.dump(oh.data, File.open('all.yml', 'w'))

user.rb

require "rubygems"
require "bundler/setup"
require 'ohai'

oh = Ohai::System.new
a = oh.all_plugins("etc")

a[:etc][:passwd].each { | k, v |
  print "#{k},,#{v[:uid]},#{v[:gid]},,#{v[:shell]},#{v[:dir]}\n"
}

group.rb

require "rubygems"
require "bundler/setup"
require 'ohai'

oh = Ohai::System.new
a = oh.all_plugins("etc")

a[:etc][:group].each { | k, v |
  print "#{k},#{v[:gid]}\n"
}