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239 lines
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HTML
239 lines
11 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1991-2019 Free Software Foundation, Inc.
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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
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>ar scripts (GNU Binary Utilities)</title>
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<meta name="description" content="ar scripts (GNU Binary Utilities)">
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<meta name="keywords" content="ar scripts (GNU Binary Utilities)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Binutils-Index.html#Binutils-Index" rel="index" title="Binutils Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="ar.html#ar" rel="up" title="ar">
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<link href="nm.html#nm" rel="next" title="nm">
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<link href="ar-cmdline.html#ar-cmdline" rel="prev" title="ar cmdline">
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<style type="text/css">
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</style>
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</head>
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<body lang="en">
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<a name="ar-scripts"></a>
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<div class="header">
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<p>
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Previous: <a href="ar-cmdline.html#ar-cmdline" accesskey="p" rel="prev">ar cmdline</a>, Up: <a href="ar.html#ar" accesskey="u" rel="up">ar</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Binutils-Index.html#Binutils-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Controlling-ar-with-a-Script"></a>
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<h3 class="section">1.2 Controlling <code>ar</code> with a Script</h3>
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<div class="smallexample">
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<pre class="smallexample">ar -M [ <<var>script</var> ]
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</pre></div>
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<a name="index-MRI-compatibility_002c-ar"></a>
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<a name="index-scripts_002c-ar"></a>
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<p>If you use the single command-line option ‘<samp>-M</samp>’ with <code>ar</code>, you
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can control its operation with a rudimentary command language. This
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form of <code>ar</code> operates interactively if standard input is coming
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directly from a terminal. During interactive use, <code>ar</code> prompts for
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input (the prompt is ‘<samp>AR ></samp>’), and continues executing even after
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errors. If you redirect standard input to a script file, no prompts are
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issued, and <code>ar</code> abandons execution (with a nonzero exit code)
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on any error.
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</p>
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<p>The <code>ar</code> command language is <em>not</em> designed to be equivalent
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to the command-line options; in fact, it provides somewhat less control
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over archives. The only purpose of the command language is to ease the
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transition to <small>GNU</small> <code>ar</code> for developers who already have scripts
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written for the MRI “librarian” program.
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</p>
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<p>The syntax for the <code>ar</code> command language is straightforward:
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</p><ul>
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<li> commands are recognized in upper or lower case; for example, <code>LIST</code>
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is the same as <code>list</code>. In the following descriptions, commands are
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shown in upper case for clarity.
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</li><li> a single command may appear on each line; it is the first word on the
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line.
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</li><li> empty lines are allowed, and have no effect.
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</li><li> comments are allowed; text after either of the characters ‘<samp>*</samp>’
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or ‘<samp>;</samp>’ is ignored.
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</li><li> Whenever you use a list of names as part of the argument to an <code>ar</code>
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command, you can separate the individual names with either commas or
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blanks. Commas are shown in the explanations below, for clarity.
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</li><li> ‘<samp>+</samp>’ is used as a line continuation character; if ‘<samp>+</samp>’ appears
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at the end of a line, the text on the following line is considered part
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of the current command.
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</li></ul>
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<p>Here are the commands you can use in <code>ar</code> scripts, or when using
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<code>ar</code> interactively. Three of them have special significance:
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</p>
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<p><code>OPEN</code> or <code>CREATE</code> specify a <em>current archive</em>, which is
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a temporary file required for most of the other commands.
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</p>
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<p><code>SAVE</code> commits the changes so far specified by the script. Prior
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to <code>SAVE</code>, commands affect only the temporary copy of the current
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archive.
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</p>
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<dl compact="compact">
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<dt><code>ADDLIB <var>archive</var></code></dt>
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<dt><code>ADDLIB <var>archive</var> (<var>module</var>, <var>module</var>, … <var>module</var>)</code></dt>
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<dd><p>Add all the contents of <var>archive</var> (or, if specified, each named
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<var>module</var> from <var>archive</var>) to the current archive.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>ADDMOD <var>member</var>, <var>member</var>, … <var>member</var></code></dt>
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<dd><p>Add each named <var>member</var> as a module in the current archive.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>CLEAR</code></dt>
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<dd><p>Discard the contents of the current archive, canceling the effect of
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any operations since the last <code>SAVE</code>. May be executed (with no
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effect) even if no current archive is specified.
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</p>
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</dd>
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<dt><code>CREATE <var>archive</var></code></dt>
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<dd><p>Creates an archive, and makes it the current archive (required for many
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other commands). The new archive is created with a temporary name; it
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is not actually saved as <var>archive</var> until you use <code>SAVE</code>.
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You can overwrite existing archives; similarly, the contents of any
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existing file named <var>archive</var> will not be destroyed until <code>SAVE</code>.
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</p>
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</dd>
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<dt><code>DELETE <var>module</var>, <var>module</var>, … <var>module</var></code></dt>
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<dd><p>Delete each listed <var>module</var> from the current archive; equivalent to
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‘<samp>ar -d <var>archive</var> <var>module</var> … <var>module</var></samp>’.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>DIRECTORY <var>archive</var> (<var>module</var>, … <var>module</var>)</code></dt>
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<dt><code>DIRECTORY <var>archive</var> (<var>module</var>, … <var>module</var>) <var>outputfile</var></code></dt>
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<dd><p>List each named <var>module</var> present in <var>archive</var>. The separate
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command <code>VERBOSE</code> specifies the form of the output: when verbose
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output is off, output is like that of ‘<samp>ar -t <var>archive</var>
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<var>module</var>…</samp>’. When verbose output is on, the listing is like
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‘<samp>ar -tv <var>archive</var> <var>module</var>…</samp>’.
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</p>
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<p>Output normally goes to the standard output stream; however, if you
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specify <var>outputfile</var> as a final argument, <code>ar</code> directs the
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output to that file.
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</p>
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</dd>
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<dt><code>END</code></dt>
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<dd><p>Exit from <code>ar</code>, with a <code>0</code> exit code to indicate successful
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completion. This command does not save the output file; if you have
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changed the current archive since the last <code>SAVE</code> command, those
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changes are lost.
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</p>
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</dd>
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<dt><code>EXTRACT <var>module</var>, <var>module</var>, … <var>module</var></code></dt>
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<dd><p>Extract each named <var>module</var> from the current archive, writing them
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into the current directory as separate files. Equivalent to ‘<samp>ar -x
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<var>archive</var> <var>module</var>…</samp>’.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>LIST</code></dt>
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<dd><p>Display full contents of the current archive, in “verbose” style
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regardless of the state of <code>VERBOSE</code>. The effect is like ‘<samp>ar
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tv <var>archive</var></samp>’. (This single command is a <small>GNU</small> <code>ar</code>
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enhancement, rather than present for MRI compatibility.)
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>OPEN <var>archive</var></code></dt>
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<dd><p>Opens an existing archive for use as the current archive (required for
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many other commands). Any changes as the result of subsequent commands
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will not actually affect <var>archive</var> until you next use <code>SAVE</code>.
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</p>
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</dd>
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<dt><code>REPLACE <var>module</var>, <var>module</var>, … <var>module</var></code></dt>
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<dd><p>In the current archive, replace each existing <var>module</var> (named in
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the <code>REPLACE</code> arguments) from files in the current working directory.
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To execute this command without errors, both the file, and the module in
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the current archive, must exist.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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<dt><code>VERBOSE</code></dt>
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<dd><p>Toggle an internal flag governing the output from <code>DIRECTORY</code>.
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When the flag is on, <code>DIRECTORY</code> output matches output from
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‘<samp>ar -tv </samp>’….
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</p>
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</dd>
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<dt><code>SAVE</code></dt>
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<dd><p>Commit your changes to the current archive, and actually save it as a
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file with the name specified in the last <code>CREATE</code> or <code>OPEN</code>
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command.
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</p>
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<p>Requires prior use of <code>OPEN</code> or <code>CREATE</code>.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Previous: <a href="ar-cmdline.html#ar-cmdline" accesskey="p" rel="prev">ar cmdline</a>, Up: <a href="ar.html#ar" accesskey="u" rel="up">ar</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Binutils-Index.html#Binutils-Index" 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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