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Related to gzip: Gunzip, 7zip


(tool, compression)
GNU compression utility. Gzip reduces the size of the named files using Lempel-Ziv LZ77 compression. Whenever possible, each file is replaced by one with the filename extension ".gz". Compressed files can be restored to their original form using gzip -d or gunzip or zcat.

The Unix "compress" utility is patented (by two separate patents, in fact) and is thus shunned by the GNU Project since it is not free software. They have therefore chosen gzip, which is free of any known software patents and which tends to compress better anyway. All compressed files in the GNU anonymous FTP area (gnu.org/pub/gnu) are in gzip format and their names end in ".gz" (as opposed to "compress"-compressed files, which end in ".Z").

Gzip can uncompress "compress"-compressed files and "pack" files (which end in ".z"). The decompression algorithms are not patented, only compression is.

The gzip program is available from any GNU archive site in shar, tar, or gzipped tar format (for those who already have a prior version of gzip and want faster data transmission). It works on virtually every Unix system, MS-DOS, OS/2 and VMS.


(GNU ZIP) A popular compression program in the Unix world that is also available for Windows and Mac. Using the .GZ file extension, gzip compresses only a single file and is therefore often used in combination with the Unix "tar" utility when more than one file must be compressed. Tar combines multiple files into one archive, and gzip compresses that single archive, creating a file with the extension .TAR.GZ.

"Gunzip" is the gzip decompression utility, and it decompresses archives compressed with gzip or the Unix pack and compress commands. Many have lamented the fact that gzip includes the word "zip" because gzip cannot decompress files compressed with PKZIP. It was named that way because gzip uses one of the algorithms in PKZIP. However, in contrast, many PKZIP utilities can decompress gzip files. For more information, visit www.gzip.org. See archive formats.
References in periodicals archive ?
Table III shows the compression and decompression times achieved for binary Huffman, plain Huffman, tagged Huffman, Compress and Gzip for files of the TREC collection.
Currently HTML files are usually compressed with common LZ77-based compression algorithms [23] like gzip or deflate [7].
This server support includes Windows specific driver support to allow customers to use the AHA363-PCIE board as the compression engine, rather than software GZIP and/or ZLIB.
The GZIP core achieves compression ratios in excess of 2.
has selected its AHA363-PCIe GZIP compression board for use in the A10 AX Series Advanced Traffic Manager appliances.
AHA363-PCIe GZIP Compression Card Selected by Verio for Data Storage
MOSCOW, Idaho -- Comtech AHA Corporation announced the introduction of its newest GZIP Data Compression Board (the AHA364-PCle) with 32 independent compression channels to ease arbitration of Central Processing Unit (CPU) resources.
With httpZip a standard Gzip or Deflate encoding method is applied to the payload of an HTTP response, significantly compressing the resource before it is transported across the Web.
NASDAQ:CMTL) that develops technology for the communications, networking and data storage markets, today announced the availability of a GZIP compression module for Apache Web Servers.
The LoadMaster data compression capability reduces the amount of data to be transferred for HTTP and HTTPS objects by leveraging GZIP compression available in all modern web browsers.
Application Server Improvements, including a new Cluster Manager for automatic load balancing and unattended fail-over of enterprise-class database applications; GZIP compression to turbo-charge data transfer performance; Persistent Connections to optimize network traffic and improve latency; and Pipelining to more efficiently fetch batches of files from the server (such as embedded style sheets and images).
Based on Company's Industry-First GZIP Chip, System Allows for Highest Compression Ratio Performance on the Market