fd.rb

sum = 0
processes = []

Dir["/proc/*/fd"].each do |dir|
  if dir =~ /proc\/(\d+)\/fd/
    count = Dir[dir + '/*'].count
    sum += count

    if count > 400
      pid_info = `ps -p #{Regexp.last_match[1]} -o args=`.chomp
      processes << [pid_info, count]
    end
  end
end

processes.sort_by { |_, count| count }.each do |pid_info, count|
  puts "#{pid_info} || #{count}"
end

puts "Total Allocated FDs: #{sum}"