John Robbins at Wintellect put out a nice blog post about using a PowerShell script to download and install the excellent suite of tools provided by Sysinternals.  I absolutely love the *concept* of PowerShell and the ability to harness the power of .Net at the command prompt.  The one downside to it is that I find the syntax to be a bit too verbose than what I normally expect out of a scripting language.  YMMV.

Anyway, in an effort to stay on top of my (limited) Ruby skills, I have ported his implementation to Ruby:

#!/usr/bin/env ruby

require 'net/http'
require 'zip/zip'

def usage
  puts ""
  puts "Downloads and extracts all the tools from Sysinternals" 
  puts "" 
  puts "Usage: ruby download_sysinternals.rb <extract-directory> [<save-directory>]" 
  puts "Required Parameter :"
  puts " <extract-directory> : The directory where the SysinternalsSuite.zip"
  puts "                       tools are extracted."
  puts "Optional Parameters :"
  puts " <save-directory> : Saves SysinternalsSuite.zip to the specified"
  puts "                    directory. If not specified, the .ZIP file "
  puts "                    is not saved."
  puts " -? : Display this usage information"
  puts ""
  puts ""
  Kernel#exit
end

def create_directory_if_needed(dir)
  File.makedirs(dir) unless File.exist?(dir)
end

def download_sysinternals_zip_file(download_dir)
  puts "Downloading SysinternalsSuite.zip file"
  url = URI.parse('http://download.sysinternals.com/Files/SysinternalsSuite.zip')
  req = Net::HTTP::Get.new(url.path)
  resp = Net::HTTP.start(url.host, url.port) { |http| http.request(req) }
  puts "Saving SysinternalsSuite.zip to: #{download_dir}"
  
  file_name = "#{download_dir}/SysinternalsSuite.zip"
  delete_file_if_exists(file_name)
  open(file_name, "wb") { |file| file.write(resp.body) }
  
  puts "Finished downloading"
end

def extract_zip_file(zip_file, extract_dir)
  puts "Extracting zip file to: #{extract_dir}"
  Zip::ZipFile.open(zip_file) do |zip|
    zip.each do |entry| 
      file_name = "#{extract_dir}/#{entry.to_s}"
      puts "Extracting #{file_name}"
      # you will need to run this as an admin if 
      # you have sysinternals stuff in "Program Files"
      delete_file_if_exists(file_name)
      entry.extract(file_name) 
    end
  end

  puts "Finished extracting zip file"
end

def delete_file_if_exists(file_name) 
  File.delete(file_name) if File.exist?(file_name)
end

# here we go!!!
usage if ( ARGV.empty? || ARGV[0] == "-?" )

extract_dir = ARGV[0]
save_dir = ARGV.length > 1 ? ARGV[1] : ENV["TEMP"]

# download the file
create_directory_if_needed(save_dir)
download_sysinternals_zip_file(save_dir)

# extract the zip file
create_directory_if_needed(extract_dir)
zip_file = "#{save_dir}/SysinternalsSuite.zip"
extract_zip_file(zip_file, extract_dir)

# clean up after ourselves
delete_file_if_exists(zip_file) if ARGV.length < 1

Tuesday, April 22, 2008 6:59:08 AM (Eastern Standard Time, UTC-05:00)      Comments [0]  Powershell | Ruby | Sysinternals