NAME¶

zcat - decompress and concatenate files to standard output

SYNOPSIS¶

zcat [options] [files]

DESCRIPTION¶

zcat copies each file argument to standard output in sequence. If any file given is compressed, its decompressed content is copied. If a file given does not exist, and its name does not end with one of the known extensions, zcat tries the compressed file names corresponding to the formats supported. If a file fails to decompress, zcat continues copying the rest of the files.

If a file is specified as '-', data are read from standard input, decompressed if needed, and sent to standard output. Data read from standard input must be of the same type; all uncompressed or all in the same compressed format.

If no files are specified, recursive searches examine the current working directory, and nonrecursive searches read standard input.

The formats supported are bzip2, gzip, lzip, xz, and zstd.

Exit status is 0 if no errors occurred, 1 otherwise.

OPTIONS¶

-h, --help

display this help and exit

-V, --version

output version information and exit

-A, --show-all

equivalent to '-vET'

-b, --number-nonblank

number nonblank output lines

-e

equivalent to '-vE'

-E, --show-ends

display '$' at end of each line

-M, --format=<list>

process only the formats in <list>

-n, --number

number all output lines

-N, --no-rcfile

don't read runtime configuration file

-O, --force-format=<fmt>

force the format given (bz2, gz, lz, xz, zst)

-q, --quiet

suppress all messages

-r, --recursive

operate recursively on directories

-R, --dereference-recursive

recursively follow symbolic links

-s, --squeeze-blank

never more than one single blank line

-t

equivalent to '-vT'

-T, --show-tabs

display TAB characters as '^I'

-v, --show-nonprinting

use '^' and 'M-' notation, except for LF and TAB

--verbose

verbose mode (show error messages)

--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

--zst=<command>

set compressor and options for zstd format

REPORTING BUGS¶

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

COPYRIGHT¶

Copyright © 2022 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.

SEE ALSO¶

The full documentation for zcat is maintained as a Texinfo manual. If the info and zcat programs are properly installed at your site, the command

info zutils

should give you access to the complete manual.