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<H1>GNU</H1>
Section: User Commands (1)<BR>Updated: December 2018<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
GNU cmp - compare two files byte by byte
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>cmp</B>
[<I>OPTION</I>]... <I>FILE1 </I>[<I>FILE2 </I>[<I>SKIP1 </I>[<I>SKIP2</I>]]]
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
Compare two files byte by byte.
<P>
The optional SKIP1 and SKIP2 specify the number of bytes to skip
at the beginning of each file (zero by default).
<P>
Mandatory arguments to long options are mandatory for short options too.
<DL COMPACT>
<DT id="1"><B>-b</B>, <B>--print-bytes</B><DD>
print differing bytes
<DT id="2"><B>-i</B>, <B>--ignore-initial</B>=<I>SKIP</I><DD>
skip first SKIP bytes of both inputs
<DT id="3"><B>-i</B>, <B>--ignore-initial</B>=<I>SKIP1</I>:SKIP2<DD>
skip first SKIP1 bytes of FILE1 and
first SKIP2 bytes of FILE2
<DT id="4"><B>-l</B>, <B>--verbose</B><DD>
output byte numbers and differing byte values
<DT id="5"><B>-n</B>, <B>--bytes</B>=<I>LIMIT</I><DD>
compare at most LIMIT bytes
<DT id="6"><B>-s</B>, <B>--quiet</B>, <B>--silent</B><DD>
suppress all normal output
<DT id="7"><B>--help</B><DD>
display this help and exit
<DT id="8"><B>-v</B>, <B>--version</B><DD>
output version information and exit
</DL>
<P>
SKIP values may be followed by the following multiplicative suffixes:
kB 1000, K 1024, MB 1,000,000, M 1,048,576,
GB 1,000,000,000, G 1,073,741,824, and so on for T, P, E, Z, Y.
<P>
If a FILE is '-' or missing, read standard input.
Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.
<A NAME="lbAE">&nbsp;</A>
<H2>AUTHOR</H2>
Written by Torbjorn Granlund and David MacKenzie.
<A NAME="lbAF">&nbsp;</A>
<H2>REPORTING BUGS</H2>
Report bugs to: <A HREF="mailto:bug-diffutils@gnu.org">bug-diffutils@gnu.org</A>
<BR>
GNU diffutils home page: &lt;<A HREF="https://www.gnu.org/software/diffutils/">https://www.gnu.org/software/diffutils/</A>&gt;
<BR>
General help using GNU software: &lt;<A HREF="https://www.gnu.org/gethelp/">https://www.gnu.org/gethelp/</A>&gt;
<A NAME="lbAG">&nbsp;</A>
<H2>COPYRIGHT</H2>
Copyright &#169; 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later &lt;<A HREF="https://gnu.org/licenses/gpl.html">https://gnu.org/licenses/gpl.html</A>&gt;.
<BR>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
<A NAME="lbAH">&nbsp;</A>
<H2>SEE ALSO</H2>
<A HREF="/cgi-bin/man/man2html?1+diff">diff</A>(1), <A HREF="/cgi-bin/man/man2html?1+diff3">diff3</A>(1), <A HREF="/cgi-bin/man/man2html?1+sdiff">sdiff</A>(1)
<P>
The full documentation for
<B>GNU</B>
is maintained as a Texinfo manual. If the
<B>info</B>
and
<B>GNU</B>
programs are properly installed at your site, the command
<DL COMPACT>
<DT id="9"><DD>
<B>info GNU</B>
</DL>
<P>
should give you access to the complete manual.
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="10"><A HREF="#lbAB">NAME</A><DD>
<DT id="11"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="12"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="13"><A HREF="#lbAE">AUTHOR</A><DD>
<DT id="14"><A HREF="#lbAF">REPORTING BUGS</A><DD>
<DT id="15"><A HREF="#lbAG">COPYRIGHT</A><DD>
<DT id="16"><A HREF="#lbAH">SEE ALSO</A><DD>
</DL>
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