gistfile1.rb

# Sort packages by their sizes, descending 

`pacman -Qi`.split("\n\n").map do |pkg|
  pkg.split("\n")
end
.sort_by do |pkg|
  pkg.grep(/Size/).first.split(":").last.to_f
end
.reverse[0 .. ARGV.first.to_i - 1].map do |i|
  name = i.first.split(":").last.strip
  size = i.grep(/Size/).first.split(":").last.to_f / 1024
  puts name << (" " * (25 - name.size)) << "\t --> \t" << "%.2f" % size
end