Filler is a simple program I use to backup partitions. It does the equivalent of a simple:

 cat /dev/zero > my_file.tmp

Its interest is that if you fill a partition with zeros, then it's easier to compress it efficiently in order to make a nice .tar.gz you'll burn on a CD later. Perfectly useless under UNIX, this program becomes a must under Windows, when there's no such thing as /dev/zero by default. With this program I've been able to compress clean images of Win2K installs on a 10Gb partition, and make them fit on a single 700Mb CD.

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Copyright © 2005 Christian Mauduit. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
Updated on Tue Jun 21 2005.