print locally installed rubygems

rubygems-local-to-csv.rb

require 'rubygems'

data = Gem::Specification.map do |gemspec|
  {
    name: gemspec.name,
    version: "'#{gemspec.version.to_s}'",
    license: gemspec.license,
    homepage: gemspec.homepage,
    source: "Gem::Specification.each"
  }
end

csv = data.first.keys.join(",")+"\n"+data.map{|d| d.values.join(",")}.join("\n")+"\n"

File.write('enum_gems.csv', csv)

Here is the updated version after my tweaks:

require 'rubygems'
require 'socket'

data = Gem::Specification.map do |gemspec|
  {
    name: gemspec.name,
    version: "'#{gemspec.version.to_s}'",
    license: gemspec.license,
    homepage: gemspec.homepage,
    source: "Gem::Specification.each"
  }
end

csv = data.first.keys.join(",")+"\n"+data.map{|d| d.values.join(",")}.join("\n")+"\n"

File.open('enum_gems.csv', 'a') do |f| f.puts(Socket.gethostname, csv)
end

The source line does not work though.

Here are the commands that I ran to execute it:
On the server (to loop through containers):

for i in docker ps|awk '{print $NF}'|egrep -v "NAMES|registry|[2-5]"; do docker exec -it $i /bin/bash; done

Then paste this for each container:

cd /assets;ruby ./rubygems-local-to-csv.rb;exit