gzip is a software application used for file compression. gzip is short for GNU zip; the program is a free software replacement for the compress program used in early Unix systems, intended for use by the GNU Project.gzip was created by Jean-loup Gailly and Mark Adler. Version 0.1 was first publicly released on October 311992. Version 1.0 followed in February 1993. OpenBSD's version of gzip is based on the older compress program instead of implemented separately, and was added in OpenBSD 3.4; the 'g' in its version stands for .
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<filename extension, compression> (Or less often "taz", Tar GNU zip) A filename extension for a file or directory which has been archived with tar and then compressed with gzip. The full form ".tar.gz" is also common on proper file systems not limited to 8.3 file names. (1996-11-03)