compress: [Unix] vt. When used without a qualifier, generally
refers to crunching of a file using a particular C implementation
of compression by Joseph M. Orost et al. and widely circulated via
Usenet; use of crunch itself in this sense is rare among Unix
hackers. Specifically, compress is built around the
Lempel-Ziv-Welch algorithm as described in "A Technique for High
Performance Data Compression", Terry A. Welch, "IEEE Computer", vol.
17, no. 6 (June 1984), pp. 8-19.