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<ol class="chapter"><li class="chapter-item expanded affix "><a href="../index.html">Introduction</a></li><li class="chapter-item expanded "><a href="../installation.html"><strong aria-hidden="true">1.</strong> Installation</a></li><li class="chapter-item expanded "><a href="../build.html"><strong aria-hidden="true">2.</strong> Build from source</a></li><li class="chapter-item expanded "><a href="../contributing.html"><strong aria-hidden="true">3.</strong> Contributing</a></li><li class="chapter-item expanded "><a href="../test_coverage.html"><strong aria-hidden="true">4.</strong> GNU test coverage</a></li><li class="chapter-item expanded "><a href="../extensions.html"><strong aria-hidden="true">5.</strong> Extensions</a></li><li class="chapter-item expanded affix "><li class="part-title">Reference</li><li class="chapter-item expanded "><a href="../multicall.html"><strong aria-hidden="true">6.</strong> Multi-call binary</a></li><li class="chapter-item expanded "><a href="../utils/arch.html"><strong aria-hidden="true">7.</strong> arch</a></li><li class="chapter-item expanded "><a href="../utils/b2sum.html"><strong aria-hidden="true">8.</strong> b2sum</a></li><li class="chapter-item expanded "><a href="../utils/b3sum.html"><strong aria-hidden="true">9.</strong> b3sum</a></li><li class="chapter-item expanded "><a href="../utils/base32.html"><strong aria-hidden="true">10.</strong> base32</a></li><li class="chapter-item expanded "><a href="../utils/base64.html"><strong aria-hidden="true">11.</strong> base64</a></li><li class="chapter-item expanded "><a href="../utils/basename.html"><strong aria-hidden="true">12.</strong> basename</a></li><li class="chapter-item expanded "><a href="../utils/basenc.html"><strong aria-hidden="true">13.</strong> basenc</a></li><li class="chapter-item expanded "><a href="../utils/cat.html"><strong aria-hidden="true">14.</strong> cat</a></li><li class="chapter-item expanded "><a href="../utils/chcon.html"><strong aria-hidden="true">15.</strong> chcon</a></li><li class="chapter-item expanded "><a href="../utils/chgrp.html"><strong aria-hidden="true">16.</strong> chgrp</a></li><li class="chapter-item expanded "><a href="../utils/chmod.html"><strong aria-hidden="true">17.</strong> chmod</a></li><li class="chapter-item expanded "><a href="../utils/chown.html"><strong aria-hidden="true">18.</strong> chown</a></li><li class="chapter-item expanded "><a href="../utils/chroot.html"><strong aria-hidden="true">19.</strong> chroot</a></li><li class="chapter-item expanded "><a href="../utils/cksum.html"><strong aria-hidden="true">20.</strong> cksum</a></li><li class="chapter-item expanded "><a href="../utils/comm.html"><strong aria-hidden="true">21.</strong> comm</a></li><li class="chapter-item expanded "><a href="../utils/cp.html"><strong aria-hidden="true">22.</strong> cp</a></li><li class="chapter-item expanded "><a href="../utils/csplit.html"><strong aria-hidden="true">23.</strong> csplit</a></li><li class="chapter-item expanded "><a href="../utils/cut.html"><strong aria-hidden="true">24.</strong> cut</a></li><li class="chapter-item expanded "><a href="../utils/date.html"><strong aria-hidden="true">25.</strong> date</a></li><li class="chapter-item expanded "><a href="../utils/dd.html"><strong aria-hidden="true">26.</strong> dd</a></li><li class="chapter-item expanded "><a href="../utils/df.html"><strong aria-hidden="true">27.</strong> df</a></li><li class="chapter-item expanded "><a href="../utils/dir.html"><strong aria-hidden="true">28.</strong> dir</a></li><li class="chapter-item expanded "><a href="../utils/dircolors.html"><strong aria-hidden="true">29.</strong> dircolors</a></li><li class="chapter-item expanded "><a href="../utils/dirname.html"><strong aria-hidden="true">30.</strong> dirname</a></li><li class="chapter-item expanded "><a href="../utils/du.html"><strong aria-hidden="true">31.</strong> du</a></li><li class="chapter-item expanded "><a href="../utils/echo.html"><strong aria-hidden="true">32.</strong> echo</a></li><li class="chapter-item expanded "><a href="../utils/env.html"><strong aria-hidden="true">33.</strong> env</a></li><li class="chapter-item expanded "><a href="../utils/expand.html"><strong aria-hidden="true">34.</strong> expand</a></li><li class="chapter-item expanded "><a href="../utils/expr.html"><strong aria-hidden="true">35.</strong> expr</a></li><li class="chapter-item expanded "><a href="../utils/factor.html"><strong aria-hidden="true">36.</strong> factor</a></li><li class="chapter-item expanded "><a href="../utils/false.html"><strong aria-hidden="true">37.</strong> false</a></li><li class="chapter-item expanded "><a href="../utils/fmt.html"><strong aria-hidden="true">38.</strong> fmt</a></li><li class="chapter-item expanded "><a href="../utils/fold.html"><strong aria-hidden="true">39.</strong> fold</a></li><li class="chapter-item expanded "><a href="../utils/groups.html"><strong aria-hidden="true">40.</strong> groups</a></li><li class="chapter-item expanded "><a href="../utils/hashsum.html"><strong aria-hidden="true">41.</strong> hashsum</a></li><li class="chapter-item expanded "><a href="../utils/head.html"><strong aria-hidden="true">42.</strong> head</a></li><li class="chapter-item expanded "><a href="../utils/hostid.html"><strong aria-hidden="true">43.</strong> hostid</a></li><li class="chapter-item expanded "><a href="../utils/hostname.html"><strong aria-hidden="true">44.</strong> hostname</a></li><li class="chapter-item expanded "><a href="../utils/id.html"><strong aria-hidden="true">45.</strong> id</a></li><li class="chapter-item expanded "><a href="../utils/install.html"><strong aria-hidden="true">46.</strong> install</a></li><li class="chapter-item expanded "><a href="../utils/join.html"><strong aria-hidden="true">47.</strong> join</a></li><li class="chapter-item expanded "><a href="../utils/kill.html"><strong aria-hidden="true">48.</strong> kill</a></li><li class="chapter-item expanded "><a href="../utils/link.html"><strong aria-hidden="true">49.</strong> link</a></li><li class="chapter-item expanded "><a href="../utils/ln.html"><strong aria-hidden="true">50.</strong> ln</a></li><li class="chapter-item expanded "><a href="../utils/logname.html"><strong aria-hidden="true">51.</strong> logname</a></li><li class="chapter-item expanded "><a href="../utils/ls.html"><strong aria-hidden="true">52.</strong> ls</a></li><li class="chapter-item expanded "><a href="../utils/md5sum.html"><strong aria-hidden="true">53.</strong> md5sum</a></li><li class="chapter-item expanded "><a href="../utils/mkdir.html"><strong aria-hidden="true">54.</strong> mkdir</a></li><li class="chapter-item expanded "><a href="../utils/mkfifo.html"><strong aria-hidden="true">55.</strong> mkfifo</a></li><li class="chapter-item expanded "><a href="../utils/mknod.html"><strong aria-hidden="true">56.</strong> mknod</a></li><li class="chapter-item expanded "><a href="../utils/mktemp.html"><strong aria-hidden="true">57.</strong> mktemp</a></li><li class="chapter-item expanded "><a href="../utils/more.html"><strong aria-hidden="true">58.</strong> more</a></li><li class="chapter-item expanded "><a href="../utils/mv.html"><strong aria-hidden="true">59.</strong> mv</a></li><li class="chapter-item expanded "><a href="../utils/nice.html"><strong aria-hidden="true">60.</strong> nice</a></li><li class="chapter-item expanded "><a href="../utils/nl.html"><strong aria-hidden="true">61.</strong> nl</a></li><li class="chapter-item expanded "><a href="../utils/nohup.html"><strong aria-hidden="true">62.</strong> nohup</a></li><li class="chapter-item expanded "><a href="../utils/nproc.html"><strong aria-hidden="true">63.</strong> nproc</a></li><li class="chapter-item expanded "><a href="../utils/numfmt.html"><strong aria-hidden="true">64.</strong> numfmt</a></li><li class="chapter-item expanded "><a href="../utils/od.html"><strong aria-hidden="true">65.</strong> od</a></li><li class="chapter-item expanded "><a href="../utils/paste.html"><strong aria-hidden="true">66.</strong> paste</a></li><li class="chapter-item expanded "><a href="../utils/pathchk.html"><strong aria-hidden="true">67.</strong> pathchk</a></li><li class="chapter-item expanded "><a href="../utils/pinky.html"><strong aria-hidden="true">68.</strong> pinky</a></li><li class="chapter-item expanded "><a href="../utils/pr.html"><strong aria-hidden="true">69.</strong> pr</a></li><li class="chapter-item expanded "><a href="../utils/printenv.html"><strong aria-hidden="true">70.</strong> printenv</a></li><li class="chapter-item expanded "><a href="../utils/printf.html"><strong aria-hidden="true">71.</strong> printf</a></li><li class="chapter-item expanded "><a href="../utils/ptx.html"><strong aria-hidden="true">72.</strong> ptx</a></li><li class="chapter-item expanded "><a href="../utils/pwd.html"><strong aria-hidden="true">73.</strong> pwd</a></li><li class="chapter-item expanded "><a href="../utils/readlink.html"><strong aria-hidden="true">74.</strong> readlink</a></li><li class="chapter-item expanded "><a href="../utils/realpath.html"><strong aria-hidden="true">75.</strong> realpath</a></li><li class="chapter-item expanded "><a href="../utils/relpath.html"><strong aria-hidden="true">76.</strong> relpath</a></li><li class="chapter-item expanded "><a href="../utils/rm.html"><strong aria-hidden="true">77.</strong> rm</a></li><li class="chapter-item expanded "><a href="../utils/rmdir.html"><strong aria-hidden="true">78.</strong> rmdir</a></li><li class="chapter-item expanded "><a href="../utils/runcon.html"><strong aria-hidden="true">79.</strong> runcon</a></li><li class="chapter-item expanded "><a href="../utils/seq.html"><strong aria-hidden="true">80.</strong> seq</a></li><li class="chapter-item expanded "><a href="../utils/sha1sum.html"><strong aria-hidden="true">81.</strong> sha1sum</a></li><li class="chapter-item expanded "><a href="../utils/sha224sum.html"><strong aria-hidden="true">82.</strong> sha224sum</a></li><li class="chapter-item expanded "><a href="../utils/sha256sum.html" class="active"><strong aria-hidden="true">83.</strong> sha256sum</a></li><li class="chapter-item expanded "><a href="../utils/sha3-224sum.html"><strong aria-hidden="true">84.</strong> sha3-224sum</a></li><li class="chapter-item expanded "><a href="../utils/sha3-256sum.html"><strong aria-hidden="true">85.</strong> sha3-256sum</a></li><li class="chapter-item expanded "><a href="../utils/sha3-384sum.html"><strong aria-hidden="true">86.</strong> sha3-384sum</a></li><li class="chapter-item expanded "><a href="../utils/sha3-512sum.html"><strong aria-hidden="true">87.</strong> sha3-512sum</a></li><li class="chapter-item expanded "><a href="../utils/sha384sum.html"><strong aria-hidden="true">88.</strong> sha384sum</a></li><li class="chapter-item expanded "><a href="../utils/sha3sum.html"><strong aria-hidden="true">89.</strong> sha3sum</a></li><li class="chapter-item expanded "><a href="../utils/sha512sum.html"><strong aria-hidden="true">90.</strong> sha512sum</a></li><li class="chapter-item expanded "><a href="../utils/shake128sum.html"><strong aria-hidden="true">91.</strong> shake128sum</a></li><li class="chapter-item expanded "><a href="../utils/shake256sum.html"><strong aria-hidden="true">92.</strong> shake256sum</a></li><li class="chapter-item expanded "><a href="../utils/shred.html"><strong aria-hidden="true">93.</strong> shred</a></li><li class="chapter-item expanded "><a href="../utils/shuf.html"><strong aria-hidden="true">94.</strong> shuf</a></li><li class="chapter-item expanded "><a href="../utils/sleep.html"><strong aria-hidden="true">95.</strong> sleep</a></li><li class="chapter-item expanded "><a href="../utils/sort.html"><strong aria-hidden="true">96.</strong> sort</a></li><li class="chapter-item expanded "><a href="../utils/split.html"><strong aria-hidden="true">97.</strong> split</a></li><li class="chapter-item expanded "><a href="../utils/stat.html"><strong aria-hidden="true">98.</strong> stat</a></li><li class="chapter-item expanded "><a href="../utils/stdbuf.html"><strong aria-hidden="true">99.</strong> stdbuf</a></li><li class="chapter-item expanded "><a href="../utils/stty.html"><strong aria-hidden="true">100.</strong> stty</a></li><li class="chapter-item expanded "><a href="../utils/sum.html"><strong aria-hidden="true">101.</strong> sum</a></li><li class="chapter-item expanded "><a href="../utils/sync.html"><strong aria-hidden="true">102.</strong> sync</a></li><li class="chapter-item expanded "><a href="../utils/tac.html"><strong aria-hidden="true">103.</strong> tac</a></li><li class="chapter-item expanded "><a href="../utils/tail.html"><strong aria-hidden="true">104.</strong> tail</a></li><li class="chapter-item expanded "><a href="../utils/tee.html"><strong aria-hidden="true">105.</strong> tee</a></li><li class="chapter-item expanded "><a href="../utils/test.html"><strong aria-hidden="true">106.</strong> test</a></li><li class="chapter-item expanded "><a href="../utils/timeout.html"><strong aria-hidden="true">107.</strong> timeout</a></li><li class="chapter-item expanded "><a href="../utils/touch.html"><strong aria-hidden="true">108.</strong> touch</a></li><li class="chapter-item expanded "><a href="../utils/tr.html"><strong aria-hidden="true">109.</strong> tr</a></li><li class="chapter-item expanded "><a href="../utils/true.html"><strong aria-hidden="true">110.</strong> true</a></li><li class="chapter-item expanded "><a href="../utils/truncate.html"><strong aria-hidden="true">111.</strong> truncate</a></li><li class="chapter-item expanded "><a href="../utils/tsort.html"><strong aria-hidden="true">112.</strong> tsort</a></li><li class="chapter-item expanded "><a href="../utils/tty.html"><strong aria-hidden="true">113.</strong> tty</a></li><li class="chapter-item expanded "><a href="../utils/uname.html"><strong aria-hidden="true">114.</strong> uname</a></li><li class="chapter-item expanded "><a href="../utils/unexpand.html"><strong aria-hidden="true">115.</strong> unexpand</a></li><li class="chapter-item expanded "><a href="../utils/uniq.html"><strong aria-hidden="true">116.</strong> uniq</a></li><li class="chapter-item expanded "><a href="../utils/unlink.html"><strong aria-hidden="true">117.</strong> unlink</a></li><li class="chapter-item expanded "><a href="../utils/uptime.html"><strong aria-hidden="true">118.</strong> uptime</a></li><li class="chapter-item expanded "><a href="../utils/users.html"><strong aria-hidden="true">119.</strong> users</a></li><li class="chapter-item expanded "><a href="../utils/vdir.html"><strong aria-hidden="true">120.</strong> vdir</a></li><li class="chapter-item expanded "><a href="../utils/wc.html"><strong aria-hidden="true">121.</strong> wc</a></li><li class="chapter-item expanded "><a href="../utils/who.html"><strong aria-hidden="true">122.</strong> who</a></li><li class="chapter-item expanded "><a href="../utils/whoami.html"><strong aria-hidden="true">123.</strong> whoami</a></li><li class="chapter-item expanded "><a href="../utils/yes.html"><strong aria-hidden="true">124.</strong> yes</a></li></ol>
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<h1 id="sha256sum"><a class="header" href="#sha256sum">sha256sum</a></h1>
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<div class="additional">
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<i class="fa fa-brands fa-linux"></i>
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<div class="version">v0.0.18
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</div>
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</div>
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<h2 id="options"><a class="header" href="#options">Options</a></h2>
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<dl><dt><code>--binary</code>, <code>-b</code></dt>
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<dd>
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<p>read in binary mode</p>
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</dd>
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<dt><code>--check</code>, <code>-c</code></dt>
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<dd>
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<p>read hashsums from the FILEs and check them</p>
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</dd>
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<dt><code>--tag</code></dt>
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<dd>
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<p>create a BSD-style checksum</p>
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</dd>
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<dt><code>--text</code>, <code>-t</code></dt>
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<dd>
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<p>read in text mode (default)</p>
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</dd>
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<dt><code>--quiet</code>, <code>-q</code></dt>
|
|
<dd>
|
|
<p>don't print OK for each successfully verified file</p>
|
|
</dd>
|
|
<dt><code>--status</code>, <code>-s</code></dt>
|
|
<dd>
|
|
<p>don't output anything, status code shows success</p>
|
|
</dd>
|
|
<dt><code>--strict</code></dt>
|
|
<dd>
|
|
<p>exit non-zero for improperly formatted checksum lines</p>
|
|
</dd>
|
|
<dt><code>--warn</code>, <code>-w</code></dt>
|
|
<dd>
|
|
<p>warn about improperly formatted checksum lines</p>
|
|
</dd>
|
|
<dt><code>--zero</code>, <code>-z</code></dt>
|
|
<dd>
|
|
<p>end each output line with NUL, not newline</p>
|
|
</dd>
|
|
<dt></dt>
|
|
<dd>
|
|
</dd>
|
|
</dl>
|
|
<h2 id="examples"><a class="header" href="#examples">Examples</a></h2>
|
|
<p>Calculate the SHA256 checksum for one or more files:</p>
|
|
<pre><code class="language-shell">sha256sum {{path/to/file1 path/to/file2 ...}}
|
|
</code></pre>
|
|
<p>Calculate and save the list of SHA256 checksums to a file:</p>
|
|
<pre><code class="language-shell">sha256sum {{path/to/file1 path/to/file2 ...}} > {{path/to/file.sha256}}
|
|
</code></pre>
|
|
<p>Calculate a SHA256 checksum from <code>stdin</code>:</p>
|
|
<pre><code class="language-shell">{{command}} | sha256sum
|
|
</code></pre>
|
|
<p>Read a file of SHA256 sums and filenames and verify all files have matching checksums:</p>
|
|
<pre><code class="language-shell">sha256sum --check {{path/to/file.sha256}}
|
|
</code></pre>
|
|
<p>Only show a message for missing files or when verification fails:</p>
|
|
<pre><code class="language-shell">sha256sum --check --quiet {{path/to/file.sha256}}
|
|
</code></pre>
|
|
<p>Only show a message when verification fails, ignoring missing files:</p>
|
|
<pre><code class="language-shell">sha256sum --ignore-missing --check --quiet {{path/to/file.sha256}}
|
|
</code></pre>
|
|
<blockquote>
|
|
<p>The examples are provided by the <a href="https://tldr.sh">tldr-pages project</a> under the <a href="https://github.com/tldr-pages/tldr/blob/main/LICENSE.md">CC BY 4.0 License</a>.</p>
|
|
<p>Please note that, as uutils is a work in progress, some examples might fail.</p>
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