117 lines
3.6 KiB
HTML
117 lines
3.6 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of SHA256SUM</TITLE>
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</HEAD><BODY>
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<H1>SHA256SUM</H1>
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Section: User Commands (1)<BR>Updated: September 2019<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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sha256sum - compute and check SHA256 message digest
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>sha256sum</B>
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[<I>,OPTION/</I>]... [<I>,FILE/</I>]...
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<P>
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Print or check SHA256 (256-bit) checksums.
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<P>
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With no FILE, or when FILE is -, read standard input.
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<DL COMPACT>
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<DT id="1"><B>-b</B>, <B>--binary</B><DD>
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read in binary mode
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<DT id="2"><B>-c</B>, <B>--check</B><DD>
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read SHA256 sums from the FILEs and check them
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<DT id="3"><B>--tag</B><DD>
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create a BSD-style checksum
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<DT id="4"><B>-t</B>, <B>--text</B><DD>
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read in text mode (default)
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<DT id="5"><B>-z</B>, <B>--zero</B><DD>
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end each output line with NUL, not newline,
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and disable file name escaping
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</DL>
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<A NAME="lbAE"> </A>
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<H3>The following five options are useful only when verifying checksums:</H3>
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<DL COMPACT>
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<DT id="6"><B>--ignore-missing</B><DD>
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don't fail or report status for missing files
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<DT id="7"><B>--quiet</B><DD>
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don't print OK for each successfully verified file
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<DT id="8"><B>--status</B><DD>
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don't output anything, status code shows success
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<DT id="9"><B>--strict</B><DD>
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exit non-zero for improperly formatted checksum lines
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<DT id="10"><B>-w</B>, <B>--warn</B><DD>
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warn about improperly formatted checksum lines
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<DT id="11"><B>--help</B><DD>
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display this help and exit
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<DT id="12"><B>--version</B><DD>
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output version information and exit
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</DL>
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<P>
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The sums are computed as described in FIPS-180-2. When checking, the input
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should be a former output of this program. The default mode is to print a
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line with checksum, a space, a character indicating input mode ('*' for binary,
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' ' for text or where binary is insignificant), and name for each FILE.
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<A NAME="lbAF"> </A>
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<H2>AUTHOR</H2>
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Written by Ulrich Drepper, Scott Miller, and David Madore.
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<A NAME="lbAG"> </A>
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<H2>REPORTING BUGS</H2>
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GNU coreutils online help: <<A HREF="https://www.gnu.org/software/coreutils/">https://www.gnu.org/software/coreutils/</A>>
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<BR>
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Report sha256sum translation bugs to <<A HREF="https://translationproject.org/team/">https://translationproject.org/team/</A>>
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<A NAME="lbAH"> </A>
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<H2>COPYRIGHT</H2>
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Copyright © 2018 Free Software Foundation, Inc.
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License GPLv3+: GNU GPL version 3 or later <<A HREF="https://gnu.org/licenses/gpl.html">https://gnu.org/licenses/gpl.html</A>>.
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<BR>
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law.
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<A NAME="lbAI"> </A>
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<H2>SEE ALSO</H2>
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Full documentation at: <<A HREF="https://www.gnu.org/software/coreutils/sha256sum">https://www.gnu.org/software/coreutils/sha256sum</A>>
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<BR>
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or available locally via: info '(coreutils) sha2 utilities'
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="13"><A HREF="#lbAB">NAME</A><DD>
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<DT id="14"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="15"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DL>
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<DT id="16"><A HREF="#lbAE">The following five options are useful only when verifying checksums:</A><DD>
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</DL>
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<DT id="17"><A HREF="#lbAF">AUTHOR</A><DD>
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<DT id="18"><A HREF="#lbAG">REPORTING BUGS</A><DD>
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<DT id="19"><A HREF="#lbAH">COPYRIGHT</A><DD>
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<DT id="20"><A HREF="#lbAI">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:27 GMT, March 31, 2021
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</BODY>
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</HTML>
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