Section utils - Debian Package: ras

 Ras is a program that adds m extra files to a set of n files, such
 that the contents of the n original files can be regenerated from any
 n of the n+m original files and extra files. Normally, these extra
 files will all be 6 bytes larger then the largest of the original
 files, but ras has a mode in which the extra files are exactly the
 same size as the original files.
 .
 Ras was originally intended for transporting a large file split over
 several floppy disks in a manner resilient to the corruption of a few
 of the disks, and a pair of example shell scripts to do this (rassplit
 and rasmerge) is included in the distribution.