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| <h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>nix</a>::<wbr><a href='index.html'>unistd</a>::<wbr><a class="fn" href=''>dup</a></span><span class='out-of-band'><span id='render-detail'> |
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| <pre class='rust fn'>pub fn dup(oldfd: <a class="type" href="https://doc.rust-lang.org/nightly/std/sys/imp/ext/io/type.RawFd.html" title="type std::sys::imp::ext::io::RawFd">RawFd</a>) -> <a class="type" href="../../nix/type.Result.html" title="type nix::Result">Result</a><<a class="type" href="https://doc.rust-lang.org/nightly/std/sys/imp/ext/io/type.RawFd.html" title="type std::sys::imp::ext::io::RawFd">RawFd</a>></pre><div class='docblock'><p>Create a copy of the specified file descriptor (see |
| <a href="http://man7.org/linux/man-pages/man2/dup.2.html">dup(2)</a>).</p> |
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| resource as the old file descriptor and the old and new file descriptors may |
| be used interchangeably. The new and old file descriptor share the same |
| underlying resource, offset, and file status flags. The actual index used |
| for the file descriptor will be the lowest fd index that is available.</p> |
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| <p>The two file descriptors do not share file descriptor flags (e.g. <code>FD_CLOEXEC</code>).</p> |
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