Original zgrep.1 for gzip: Jean-loup Gailly
Charles Levert <charles@comm.polymtl.ca>
Modifications for XZ Utils: Lasse Collin
License: GNU GPLv2+
XZGREP 1 "2010-09-27" "Tukaani" "XZ Utils"
NAME
xzgrep - search compressed files for a regular expression
SYNOPSIS
xzgrep [ grep_options ] [ -e ] pattern file "..." xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...
DESCRIPTION
xzgrep invokes
grep (1) on
files which may be either uncompressed or compressed with
xz (1), lzma (1), gzip (1), or
bzip2 (1). All options specified are passed directly to
grep (1). If no file is specified, then standard input is decompressed if necessary and fed to grep (1). When reading from standard input, gzip (1) and bzip2 (1) compressed files are not supported.
If xzgrep is invoked as xzegrep or xzfgrep then egrep (1) or fgrep (1) is used instead of grep (1). The same applies to names lzgrep , lzegrep , and lzfgrep , which are provided for backward compatibility with LZMA Utils.
ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep (1), egrep (1), or fgrep (1).
"SEE ALSO"
grep (1), xz (1), gzip (1), bzip2 (1), zgrep (1)