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, or if a file is specified as  '-',  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

   -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

   -M, --format=<list>
          process only the formats in <list>

   -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>

   -O, --force-format=<fmt>
          force given format (bz2, gz, lz, xz)

   -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

   Numbers may be followed by a multiplier: k = kB = 10^3 = 1000, Ki = KiB
   = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...

REPORTING BUGS

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

COPYRIGHT

   Copyright © 2016 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.

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Free and Open Source Software