gem_list.text

actionmailer (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
actionpack (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
activerecord (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
activeresource (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
activesupport (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
adzap-ar_mailer (2.1.5)
ambethia-smtp-tls (1.1.2)
binarylogic-authlogic (2.1.1)
bones (2.5.1)
brynary-webrat (0.4.0)
builder (2.1.2)
bullet (1.7.0)
capistrano (2.5.5)
carrierwave (0.3.5.1)
cgi_multipart_eof_fix (2.5.0)
cheat (1.2.1)
chronic (0.2.3)
ClothRed (0.4.1)
colored (1.1)
columnize (0.2)
commonwatir (1.6.2)
compass (0.8.17)
compass-susy-plugin (0.6.3)
configuration (1.1.0)
contest (0.1.2)
crack (0.1.2)
cucumber (0.4.3)
culerity (0.2.3)
curb (0.5.1.0)
curl-multi (0.2)
daemon-spawn (0.2.0)
daemons (1.0.10)
darkfish-rdoc (1.1.5)
dcadenas-rspec2rr (0.1.0)
devise (0.6.0, 0.5.2)
diff-lcs (1.1.2)
dm-core (0.10.0)
engineyard-eycap (0.4.6)
factory_girl (1.2.3)
faker (0.3.1)
fakeweb (1.2.6, 1.2.5)
FakeWeb (1.1.2)
fastercsv (1.5.0, 1.4.0)
fastthread (1.0.7)
firewatir (1.6.2)
gem_plugin (0.2.3)
GeoRuby (1.3.4)
gettext (1.93.0)
graybook (1.1.1)
haml (2.2.13, 2.2.10, 2.0.9)
happymapper (0.2.2)
hashrocket-mad_mimi_mailer (0.0.6)
hashtostruct (0.9.1)
heroku (1.3.0)
highline (1.5.0)
hoe (1.12.1)
hpricot (0.8.1, 0.6.164)
htmlentities (4.0.0)
httparty (0.4.3)
i18n (0.2.0)
json (1.1.7, 1.1.3)
json_pure (1.1.9)
launchy (0.3.3)
libxml-ruby (0.9.8)
linecache (0.43)
mechanize (0.9.2)
memcached (0.17.4)
mime-types (1.16)
mini_magick (1.2.3)
mislav-will_paginate (2.3.8)
mocha (0.9.7, 0.9.5)
mongrel (1.1.5)
mysql (2.7)
net-scp (1.0.2)
net-sftp (2.0.2)
net-ssh (2.0.11)
net-ssh-gateway (1.0.1)
newrelic (2.7.4)
nokogiri (1.2.3)
packet (0.1.15)
pluginaweek-state_machine (0.8.0)
polyglot (0.2.9, 0.2.8, 0.2.5)
rabble-geoplanet (0.2.3)
rack (1.0.1, 0.9.1)
rails (2.3.4, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.2)
rake (0.8.7, 0.8.4)
rcov (0.8.1.2.0)
rdiscount (1.3.4)
rdoc (2.4.3)
RedCloth (4.2.2, 4.1.0)
redgreen (1.2.2)
rest-client (1.0.3)
rillow (0.2.0)
rmagick (2.9.1)
rr (0.7.1, 0.6.0)
rspec (1.2.9, 1.2.7, 1.1.11)
rspec-rails (1.2.9, 1.1.11)
ruby-debug (0.10.3)
ruby-debug-base (0.10.3)
ruby-gpgme (1.0.7)
ruby-growl (1.0.1)
rubyforge (1.0.4, 1.0.3)
rubygems-update (1.3.5)
RubyInline (3.8.3)
rubyist-aasm (2.0.5)
rvm (0.0.64)
s4t-utils (1.0.4)
scrubyt (0.4.06)
sqlite3-ruby (1.2.4)
sr-mg (0.0.5)
taf2-curb (0.4.8.0)
technoweenie-rest-client (0.5.1)
term-ansicolor (1.0.4, 1.0.3)
test-spec (0.10.0)
thoughtbot-factory_girl (1.2.1, 1.1.5, 1.1.3)
thoughtbot-shoulda (2.10.2)
tinder (1.2.0)
treetop (1.4.2, 1.4.1, 1.2.5)
tzinfo (0.3.13)
user-choices (1.1.6)
validatable (1.6.7)
warden (0.6.4, 0.6.1, 0.5.1)
webmat-git_remote_branch (0.3.0)
webrat (0.5.3, 0.4.4)
will_paginate (2.2.2)
wirble (0.1.2)
xml-simple (1.0.12)
xmpp4r (0.4)
ZenTest (4.1.4)

sync_gems.rb

@gems_installed_list = `sudo gem list` 

begin
  @gems_to_install_list = File.open(ARGV.first)
rescue
  puts "usage: ruby sync_gems.rb your_file_with_gems_list" 
  exit 1
end

def gem_versions(gem_string)
  if(releases = gem_string.match(/\((.*)\)/)[1])
    releases.split(",").each {|r| r.strip!}
  end
end

def gem_name(gem_string)
  gem_string.match(/(.*)\s\(/)[1] 
end

def gem_exist?(name, version)
  @gems_installed_list.each do |gem_string|
    return true if gem_name(gem_string) == name && gem_versions(gem_string).include?(version)
  end
  false
end

# begin

@gems_to_install_list.each do |gem_string|
  gem_versions(gem_string).each do |version|
    name = gem_name(gem_string)
    if !gem_exist?(name, version)
      puts "Installing: #{name} version #{version}"
      puts `sudo gem install #{name} -v=#{version} --no-rdoc --no-ri`
    else
      puts "skipping #{name} version #{version}, because it is already installed"
    end
  end
end