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ZGREP(1) User Commands ZGREP(1)

NAME

zgrep - search compressed files for a regular expression

SYNOPSIS

zgrep [ options] <pattern> [files]

DESCRIPTION

Zgrep is a front end to the grep program that allows transparent search on any combination of compressed and uncompressed files. If any given file is compressed, its decompressed content is used. If a given file does not exist, and its name does not end with one of the known extensions, zgrep tries the compressed file names corresponding to the supported formats. If no files are specified, data is read from standard input, decompressed if needed, and fed to grep. Data read from standard input must be of the same type; all uncompressed or all in the same compression format.
The supported formats are bzip2, gzip, lzip and xz.
Exit status is 0 if match, 1 if no match, 2 if trouble.

OPTIONS

--help
display this help and exit
-V, --version
output version information and exit
-a, --text
treat all files as text
-A, --after-context=<n>
print <n> lines of trailing context
-b, --byte-offset
print the byte offset of each line
-B, --before-context=<n>
print <n> lines of leading context
-c, --count
only print a count of matching lines per file
-C, --context=<n>
print <n> lines of output context
-e, --regexp=<pattern>
use <pattern> as the pattern to match
-E, --extended-regexp
<pattern> is an extended regular expression
-f, --file=<file>
obtain patterns from <file>
-F, --fixed-strings
<pattern> is a set of newline-separated strings
--format=<fmt>
force given format (bz2, gz, lz, xz)
-h, --no-filename
suppress the prefixing filename on output
-H, --with-filename
print the filename for each match
-i, --ignore-case
ignore case distinctions
-I
ignore binary files
-l, --files-with-matches
only print names of files containing matches
-L, --files-without-match
only print names of files containing no matches
-m, --max-count=<n>
stop after <n> matches
-n, --line-number
print the line number of each line
-N, --no-rcfile
don't read runtime configuration file
-o, --only-matching
show only the part of a line matching <pattern>
-q, --quiet
suppress all messages
-r, --recursive
operate recursively on directories
-s, --no-messages
suppress error messages
-v, --invert-match
select non-matching lines
--verbose
verbose mode (show error messages)
-w, --word-regexp
match only whole words
-x, --line-regexp
match only whole lines
--bz2=<command>
set compressor and options for bzip2 format
--gz=<command>
set compressor and options for gzip format
--lz=<command>
set compressor and options for lzip format
--xz=<command>
set compressor and options for xz format

REPORTING BUGS

Report bugs to zutils-bug@nongnu.org
 
Zutils home page: http://www.nongnu.org/zutils/zutils.html

COPYRIGHT

Copyright © 2014 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
 
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
August 2014 zgrep (zutils) 1.3