ZGREP(1) - man page online | user commands

Search compressed files for a regular expression.

May 2015
ZGREP(1)                                  User Commands                                  ZGREP(1)


zgrep - search compressed files for a regular expression


zgrep [options] <pattern> [files]


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.


--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...


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Copyright © 2015 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later <> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
zgrep (zutils) 1.4 May 2015 ZGREP(1)
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zgrep(1) referred by dgrep(1) | grep(1) | proc(5) | xzgrep(1) | zforce(1) | zmore(1) | znew(1)
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