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diff --git a/share/doc/gfortran/EXECUTE_005fCOMMAND_005fLINE.html b/share/doc/gfortran/EXECUTE_005fCOMMAND_005fLINE.html new file mode 100644 index 0000000..c2b24e3 --- /dev/null +++ b/share/doc/gfortran/EXECUTE_005fCOMMAND_005fLINE.html @@ -0,0 +1,178 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1999-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). 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Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The GNU Fortran Compiler: EXECUTE_COMMAND_LINE</title> + +<meta name="description" content="The GNU Fortran Compiler: EXECUTE_COMMAND_LINE"> +<meta name="keywords" content="The GNU Fortran Compiler: EXECUTE_COMMAND_LINE"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures"> +<link href="EXIT.html#EXIT" rel="next" title="EXIT"> +<link href="EVENT_005fQUERY.html#EVENT_005fQUERY" rel="previous" title="EVENT_QUERY"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="EXECUTE_005fCOMMAND_005fLINE"></a> +<div class="header"> +<p> +Next: <a href="EXIT.html#EXIT" accesskey="n" rel="next">EXIT</a>, Previous: <a href="EVENT_005fQUERY.html#EVENT_005fQUERY" accesskey="p" rel="previous">EVENT_QUERY</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="EXECUTE_005fCOMMAND_005fLINE-_002d_002d_002d-Execute-a-shell-command"></a> +<h3 class="section">8.100 <code>EXECUTE_COMMAND_LINE</code> — Execute a shell command</h3> +<a name="index-EXECUTE_005fCOMMAND_005fLINE"></a> +<a name="index-system_002c-system-call"></a> +<a name="index-command-line"></a> + +<dl compact="compact"> +<dt><em>Description</em>:</dt> +<dd><p><code>EXECUTE_COMMAND_LINE</code> runs a shell command, synchronously or +asynchronously. +</p> +<p>The <code>COMMAND</code> argument is passed to the shell and executed (The +shell is <code>sh</code> on Unix systems, and <code>cmd.exe</code> on Windows.). +If <code>WAIT</code> is present and has the value false, the execution of +the command is asynchronous if the system supports it; otherwise, the +command is executed synchronously using the C library’s <code>system</code> +call. +</p> +<p>The three last arguments allow the user to get status information. After +synchronous execution, <code>EXITSTAT</code> contains the integer exit code of +the command, as returned by <code>system</code>. <code>CMDSTAT</code> is set to zero +if the command line was executed (whatever its exit status was). +<code>CMDMSG</code> is assigned an error message if an error has occurred. +</p> +<p>Note that the <code>system</code> function need not be thread-safe. It is +the responsibility of the user to ensure that <code>system</code> is not +called concurrently. +</p> +<p>For asynchronous execution on supported targets, the POSIX +<code>posix_spawn</code> or <code>fork</code> functions are used. Also, a signal +handler for the <code>SIGCHLD</code> signal is installed. +</p> +</dd> +<dt><em>Standard</em>:</dt> +<dd><p>Fortran 2008 and later +</p> +</dd> +<dt><em>Class</em>:</dt> +<dd><p>Subroutine +</p> +</dd> +<dt><em>Syntax</em>:</dt> +<dd><p><code>CALL EXECUTE_COMMAND_LINE(COMMAND [, WAIT, EXITSTAT, CMDSTAT, CMDMSG ])</code> +</p> +</dd> +<dt><em>Arguments</em>:</dt> +<dd><table> +<tr><td width="15%"><var>COMMAND</var></td><td width="70%">Shall be a default <code>CHARACTER</code> scalar.</td></tr> +<tr><td width="15%"><var>WAIT</var></td><td width="70%">(Optional) Shall be a default <code>LOGICAL</code> scalar.</td></tr> +<tr><td width="15%"><var>EXITSTAT</var></td><td width="70%">(Optional) Shall be an <code>INTEGER</code> of the +default kind.</td></tr> +<tr><td width="15%"><var>CMDSTAT</var></td><td width="70%">(Optional) Shall be an <code>INTEGER</code> of the +default kind.</td></tr> +<tr><td width="15%"><var>CMDMSG</var></td><td width="70%">(Optional) Shall be an <code>CHARACTER</code> scalar of the +default kind.</td></tr> +</table> + +</dd> +<dt><em>Example</em>:</dt> +<dd><div class="smallexample"> +<pre class="smallexample">program test_exec + integer :: i + + call execute_command_line ("external_prog.exe", exitstat=i) + print *, "Exit status of external_prog.exe was ", i + + call execute_command_line ("reindex_files.exe", wait=.false.) + print *, "Now reindexing files in the background" + +end program test_exec +</pre></div> + + +</dd> +<dt><em>Note</em>:</dt> +<dd> +<p>Because this intrinsic is implemented in terms of the <code>system</code> +function call, its behavior with respect to signaling is processor +dependent. In particular, on POSIX-compliant systems, the SIGINT and +SIGQUIT signals will be ignored, and the SIGCHLD will be blocked. As +such, if the parent process is terminated, the child process might not be +terminated alongside. +</p> + +</dd> +<dt><em>See also</em>:</dt> +<dd><p><a href="SYSTEM.html#SYSTEM">SYSTEM</a> +</p></dd> +</dl> + + + +<hr> +<div class="header"> +<p> +Next: <a href="EXIT.html#EXIT" accesskey="n" rel="next">EXIT</a>, Previous: <a href="EVENT_005fQUERY.html#EVENT_005fQUERY" accesskey="p" rel="previous">EVENT_QUERY</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |