GZIP(1) GZIP(1)
NAME
gzip, gunzip - compression and decompression utilities
SYNOPSIS
gzip [ -v ] [ -level ] [ file... ]
gunzip [ file... ]
DESCRIPTION
Gzip and gunzip perform data compression and decompression
compatible with the Unix gzip file format, which uses a
hybrid Lempel-Ziv 1977 and Huffman compression algorithm
called `deflate'. If no arguments are given gzip compresses
each file replacing it by a file of the same name with the a
.gz suffix appended. If no files are given, standard input
and standard output are used. Level is a single decimal
digit between 1 and 9; higher numbers give better compres-
sion. The default level is 6. The -v option causes gzip to
report the compression ratio of each file that it com-
presses.
Gunzip performs the opposite operation to gzip; each file
(which must have a .gz suffix) is uncompressed, and replaced
by a file of the same name with the .gz suffix removed. If
no files are given, standard input and standard output are
used.
SOURCE
/appl/cmd/gzip.b
/appl/cmd/gunzip.b
SEE ALSO
filter(2), filter-deflate(2)
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