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 non-compressed files. If any given file is compressed, its uncompressed 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 compressors. 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 compressed with the same compressor.   The  supported  compressors
       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

       -n, --line-number
              print the line number of each line

       -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

REPORTING BUGS

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

COPYRIGHT

       Copyright   ©   2011   Antonio   Diaz   Diaz.    License   GPLv3+:   GNU   GPL   version   3   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.