.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.46.1.
.TH ZDIFF "1" "August 2014" "zdiff (zutils) 1.3" "User Commands"
.SH NAME
zdiff \- decompress and compare two files line by line
.SH SYNOPSIS
.B zdiff
[\fI\,options\/\fR] \fI\,file1 \/\fR[\fI\,file2\/\fR]
.SH DESCRIPTION
Zdiff compares two files ("\-" means standard input), and if they
differ, shows the differences line by line. If any given file is
compressed, its decompressed content is used. Zdiff is a front end to
the diff program and has the limitation that messages from diff refer to
temporary filenames instead of those specified.
.PP
The supported formats are bzip2, gzip, lzip and xz.
.PP
Compares <file1> to <file2>. If <file2> is omitted zdiff 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\-a\fR, \fB\-\-text\fR
treat all files as text
.TP
\fB\-b\fR, \fB\-\-ignore\-space\-change\fR
ignore changes in the amount of white space
.TP
\fB\-B\fR, \fB\-\-ignore\-blank\-lines\fR
ignore changes whose lines are all blank
.TP
\fB\-c\fR
use the context output format
.TP
\fB\-C\fR, \fB\-\-context=\fR<n>
same as \fB\-c\fR but use <n> lines of context
.TP
\fB\-d\fR, \fB\-\-minimal\fR
try hard to find a smaller set of changes
.TP
\fB\-E\fR, \fB\-\-ignore\-tab\-expansion\fR
ignore changes due to tab expansion
.TP
\fB\-\-format\fR=\fI\,[\/\fR<fmt1>][,<fmt2>]
force given formats (bz2, gz, lz, xz)
.TP
\fB\-i\fR, \fB\-\-ignore\-case\fR
ignore case differences in file contents
.TP
\fB\-N\fR, \fB\-\-no\-rcfile\fR
don't read runtime configuration file
.TP
\fB\-p\fR, \fB\-\-show\-c\-function\fR
show which C function each change is in
.TP
\fB\-q\fR, \fB\-\-brief\fR
output only whether files differ
.TP
\fB\-s\fR, \fB\-\-report\-identical\-files\fR
report when two files are identical
.TP
\fB\-t\fR, \fB\-\-expand\-tabs\fR
expand tabs to spaces in output
.TP
\fB\-T\fR, \fB\-\-initial\-tab\fR
make tabs line up by prepending a tab
.TP
\fB\-u\fR
use the unified output format
.TP
\fB\-U\fR, \fB\-\-unified=\fR<n>
same as \fB\-u\fR but use <n> lines of context
.TP
\fB\-w\fR, \fB\-\-ignore\-all\-space\fR
ignore all white space
.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 2014 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.