md5sum - HOWTO 


1) MD5SUM for Linux

   Most Linux already comes with md5sum tool.
   Simply type md5sum -c MD5SUM to verify if the package is valid.

   ex)  $ md5sum -c MD5SUM
 	$ openwebmail-2.10-1.i386.rpm: OK

   man md5sum for more info


2) MD5SUM for Windows

Installation
============

Windows Vista/7/8.1: Download md5sum.exe to your c:\winnt\system32 (c:\windows\system32)

Checking (check if an ISO file is error-free)
========

Open an MS-DOS window and go to the directory of the show you want to check. When you are in that directory, type:

md5sum -c [filename].md5  OR 
md5sum -c MD5SUM
(Exemple: write md5sum -c extix14.1-64bit-gnome-310-isoh-persistent-1430mb-140423.md5 and press ENTER)
You will get the answer: Ok (if the ISO file is error-free).

Note: When you run the command just mentioned the ISO file (that you want to check) and the md5sum file must be in the directory you "stand in". If you have the 
just mentioned files on the desktop, you must then immediately after you started the command prompt give the command cd Desktop (or cd desktop)