log2bin.rb

#!/usr/bin/ruby

if ARGV.length != 1
  puts "#{$0} outputfile"
  exit -1
end
unless file = File.open(ARGV[0],"wb")
  puts "#{$0} outputfile"
  puts "#{ARGV[0]} can't write"
  exit -1
end
begin
  datas = []
  STDIN.each do |line|
    datas.concat(line.scan(/[\da-zA-Z]{2}/).map do|i| i.hex end)
  end
  file.write(datas.pack("C*"))
ensure
  file.close
end