<programming> A program like Unix's "split" which breaks an input file into parts, usually of a pre-set size, e.g. the maximum size that can fit on a floppy. The parts can then be assembled with a dechunker, which is usually just the chunker in a different mode.
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Nearby terms: CHRP « chug « chug report « chunker » Church, Alonzo » Church integer » Church of the SubGenius