Hi: A single MD5sum file can contain MD5sums for as many files as you wish. If you view the file, you'll see that it's a text file with the filename at the start of the line, followed by the MD5sum for that file. To check your files against the files listed in the MD5sum file, go into the same directory as ;your files are located and then type: md5sum -c <filename> Where <filename> is the file containing the MD5sums you wish to check against. If you wish to see what it's doing, also use the -v flag. Geoff. -- Geoff Shang <gshang at uq.net.au> ICQ number 43634701 Make sure your E-mail can be read by everyone! http://www.betips.net/etc/evilmail.html Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html