120 lines
7.1 KiB
HTML
120 lines
7.1 KiB
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<!DOCTYPE html>
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<html>
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Inc.
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled "GNU Free
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Documentation License." -->
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<title>Terminals and Ptys (Guile Reference Manual)</title>
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<link href="POSIX.html" rel="up" title="POSIX">
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<link href="Pipes.html" rel="next" title="Pipes">
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<link href="Signals.html" rel="prev" title="Signals">
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</head>
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<body lang="en">
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<div class="subsection-level-extent" id="Terminals-and-Ptys">
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<div class="nav-panel">
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<p>
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Next: <a href="Pipes.html" accesskey="n" rel="next">Pipes</a>, Previous: <a href="Signals.html" accesskey="p" rel="prev">Signals</a>, Up: <a href="POSIX.html" accesskey="u" rel="up"><abbr class="acronym">POSIX</abbr> System Calls and Networking</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<h4 class="subsection" id="Terminals-and-Ptys-1"><span>7.2.9 Terminals and Ptys<a class="copiable-link" href="#Terminals-and-Ptys-1"> ¶</a></span></h4>
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<dl class="first-deffn">
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<dt class="deffn" id="index-isatty_003f"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">isatty?</strong> <var class="def-var-arguments">port</var><a class="copiable-link" href="#index-isatty_003f"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fisatty_005fp"><span class="category-def">C Function: </span><span><strong class="def-name">scm_isatty_p</strong> <var class="def-var-arguments">(port)</var><a class="copiable-link" href="#index-scm_005fisatty_005fp"> ¶</a></span></dt>
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<dd><a class="index-entry-id" id="index-terminal"></a>
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<p>Return <code class="code">#t</code> if <var class="var">port</var> is using a serial non–file
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device, otherwise <code class="code">#f</code>.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-ttyname"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">ttyname</strong> <var class="def-var-arguments">port</var><a class="copiable-link" href="#index-ttyname"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fttyname"><span class="category-def">C Function: </span><span><strong class="def-name">scm_ttyname</strong> <var class="def-var-arguments">(port)</var><a class="copiable-link" href="#index-scm_005fttyname"> ¶</a></span></dt>
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<dd><a class="index-entry-id" id="index-terminal-1"></a>
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<p>Return a string with the name of the serial terminal device
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underlying <var class="var">port</var>.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-ctermid"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">ctermid</strong><a class="copiable-link" href="#index-ctermid"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fctermid"><span class="category-def">C Function: </span><span><strong class="def-name">scm_ctermid</strong> <var class="def-var-arguments">()</var><a class="copiable-link" href="#index-scm_005fctermid"> ¶</a></span></dt>
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<dd><a class="index-entry-id" id="index-terminal-2"></a>
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<p>Return a string containing the file name of the controlling
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terminal for the current process.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-tcgetpgrp"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">tcgetpgrp</strong> <var class="def-var-arguments">port</var><a class="copiable-link" href="#index-tcgetpgrp"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005ftcgetpgrp"><span class="category-def">C Function: </span><span><strong class="def-name">scm_tcgetpgrp</strong> <var class="def-var-arguments">(port)</var><a class="copiable-link" href="#index-scm_005ftcgetpgrp"> ¶</a></span></dt>
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<dd><a class="index-entry-id" id="index-process-group"></a>
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<p>Return the process group ID of the foreground process group
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associated with the terminal open on the file descriptor
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underlying <var class="var">port</var>.
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</p>
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<p>If there is no foreground process group, the return value is a
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number greater than 1 that does not match the process group ID
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of any existing process group. This can happen if all of the
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processes in the job that was formerly the foreground job have
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terminated, and no other job has yet been moved into the
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foreground.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-tcsetpgrp"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">tcsetpgrp</strong> <var class="def-var-arguments">port pgid</var><a class="copiable-link" href="#index-tcsetpgrp"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005ftcsetpgrp"><span class="category-def">C Function: </span><span><strong class="def-name">scm_tcsetpgrp</strong> <var class="def-var-arguments">(port, pgid)</var><a class="copiable-link" href="#index-scm_005ftcsetpgrp"> ¶</a></span></dt>
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<dd><a class="index-entry-id" id="index-process-group-1"></a>
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<p>Set the foreground process group ID for the terminal used by the file
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descriptor underlying <var class="var">port</var> to the integer <var class="var">pgid</var>.
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The calling process
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must be a member of the same session as <var class="var">pgid</var> and must have the same
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controlling terminal. The return value is unspecified.
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</p></dd></dl>
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</div>
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<hr>
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<div class="nav-panel">
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<p>
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Next: <a href="Pipes.html">Pipes</a>, Previous: <a href="Signals.html">Signals</a>, Up: <a href="POSIX.html"><abbr class="acronym">POSIX</abbr> System Calls and Networking</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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