bigfiles.rb

#!/usr/bin/env ruby

require 'optparse'
require 'ostruct'
require 'filesize'
require 'pry'

opts = {}
opts[:path] = '/'
opts[:number] = 15

OptionParser.new do |p|
  p.on("-v", "--verbose", "verbose output") do |v|
    opts[:verbose] = v
  end

  p.on("-p", "--path PATH", "report large files starting at PATH (default '/')") do |v|
    opts[:path] = v
  end

  p.on("-n", "--number N", "report the largest N files (default 15)") do |v|
    opts[:number] = v
  end
end.parse!

if opts[:verbose]
  puts "scanning #{opts[:path]} for #{opts[:number]} largest files..."
end

# Not using the du -h option because sort doesn't handle -h on a mac
`sudo du -a #{opts[:path]} | sort -rn | head -n #{opts[:number]}`.each_line do |line|
  size = Filesize.from(line.split("\t").first.strip + " B").pretty
  file = line.split("\t").last.strip 
  
  puts "#{size}\t#{file}"
end