osd check

exe check

  DEPENDENCIES  = {:java => false, :gm => false, :pdftotext => false, :pdftk => false, :pdftailor => false, :tesseract => false}

  # Check for all dependencies, and note their absence.
  dirs = ENV['PATH'].split(File::PATH_SEPARATOR)
  DEPENDENCIES.each_key do |dep|
    dirs.each do |dir|
      if File.executable?(File.join(dir, dep.to_s))
        DEPENDENCIES[dep] = true
        break
      end
    end
  end

gistfile1.txt

val = %x[ #{'tesseract --list-langs'} 2>&1 >/dev/null ]
puts val.include? 'osd'