--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bin/cek.rb	Wed Nov 02 22:12:16 2011 +0700
@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+require 'zlib'
+
+block = 1048576
+ARGV.each do |filename|
+	crc = 0
+	file = File.open(filename, 'rb')
+	currentbyte = 0
+	while (line = file.read(block)) do
+		crc = Zlib.crc32(line,crc)
+	end
+	file.close
+	printf("%s %08X\n", filename, crc.to_s)
+end