.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.46.1.
.TH ZCMP "1" "January 2019" "zcmp (zutils) 1.8" "User Commands"
.SH NAME
zcmp \- decompress and compare two files byte by byte
.SH SYNOPSIS
.B zcmp
[\fI\,options\/\fR] \fI\,file1 \/\fR[\fI\,file2\/\fR]
.SH DESCRIPTION
Zcmp compares two files ('\-' means standard input), and if they differ,
tells the first byte and line number where they differ. Bytes and lines
are numbered starting with 1. If any given file is compressed, its
decompressed content is used. Compressed files are decompressed on the
fly; no temporary files are created.
.PP
The formats supported are bzip2, gzip, lzip and xz.
.PP
Zcmp compares file1 to file2. If file2 is omitted zcmp tries the
following:
.IP
1. If file1 is compressed, compares its decompressed contents with
the corresponding uncompressed file (the name of file1 with the
extension removed).
.IP
2. If file1 is uncompressed, compares it with the decompressed
contents of file1.[lz|bz2|gz|xz] (the first one that is found).
.IP
3. If no suitable file is found, compares file1 with data read from
standard input.
.PP
Exit status is 0 if inputs are identical, 1 if different, 2 if trouble.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
display this help and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
output version information and exit
.TP
\fB\-b\fR, \fB\-\-print\-bytes\fR
print differing bytes
.TP
\fB\-i\fR, \fB\-\-ignore\-initial=\fR<n>[:<n2>]
ignore differences in the first <n> bytes
.TP
\fB\-l\fR, \fB\-\-list\fR
list position, value of all differing bytes
.TP
\fB\-M\fR, \fB\-\-format=\fR<list>
process only the formats in <list>
.TP
\fB\-n\fR, \fB\-\-bytes=\fR<n>
compare at most <n> bytes
.TP
\fB\-N\fR, \fB\-\-no\-rcfile\fR
don't read runtime configuration file
.TP
\fB\-O\fR, \fB\-\-force\-format\fR=\fI\,[\/\fR<f1>][,<f2>]
force given formats (bz2, gz, lz, xz)
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages
.TP
\fB\-s\fR, \fB\-\-silent\fR
(same as \fB\-\-quiet\fR)
.TP
\fB\-v\fR, \fB\-\-verbose\fR
verbose mode (same as \fB\-\-list\fR)
.TP
\fB\-\-bz2=\fR<command>
set compressor and options for bzip2 format
.TP
\fB\-\-gz=\fR<command>
set compressor and options for gzip format
.TP
\fB\-\-lz=\fR<command>
set compressor and options for lzip format
.TP
\fB\-\-xz=\fR<command>
set compressor and options for xz format
.PP
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...
.SH "REPORTING BUGS"
Report bugs to zutils\-bug@nongnu.org
.br
Zutils home page: http://www.nongnu.org/zutils/zutils.html
.SH COPYRIGHT
Copyright \(co 2019 Antonio Diaz Diaz.
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.