#!/usr/bin/ruby

if ARGV[0]
    myfile = ARGV[0]
else
    puts "No filename given"
    exit 1
end

system("mv \"#{myfile}\" \"#{myfile}.bak\"")
File.open("#{myfile}", "w") do |outfile|
    IO.foreach("#{myfile}.bak") do |line|
        if line =~ /size = \d+/
            outfile.print line.sub(/(\d+)/) {|match| match.to_i/10}
        else
            outfile.print line
        end
    end
end