mirror of https://github.com/python/cpython
235 lines
7.2 KiB
HTML
235 lines
7.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML3.2//EN">
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<!-- $Id$ -->
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<html> <head>
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<title>ar - create and maintain library archives</title>
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</head>
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<body bgcolor="#ffffcb">
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<h1>ar</h1>
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<h4 align="right">create and maintain library archives</h4>
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<h2>Synopsis</h2>
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<pre>
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ar [-][dprtx][cuv] <i>archive</i> [<i>file</i> ...]
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</pre>
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<h2>Options</h2>
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<table>
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<tr>
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<td valign="top"><b>-</b></td>
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<td valign="top">
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The <b>-</b> is optional for introducing <tt>ar</tt> command-line
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arguments; this is a POSIX requirement, and I've never seen anyone
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use it.</td>
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</tr>
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<tr>
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<td valign="top"><b>c</b></td>
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<td valign="top">
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Don't print a diagnostic message to <i>stderr</i> when
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<i>archive</i> is created.</td>
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</tr>
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<tr>
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<td valign="top"><b>d</b></td>
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<td valign="top">
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Delete <i>file(s)</i> from <i>archive</i>.</td>
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</tr>
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<tr>
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<td valign="top"><b>p</b></td>
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<td valign="top">
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Write the contents of the named <i>file(s)</i> to <i>stdout</i>.
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If no <i>file(s)</i> are specified, all of the files in
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<i>archive</i> are written in the order of the archive.</td>
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</tr>
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<tr>
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<td valign="top"><b>r</b></td>
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<td valign="top">
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Replace or add <i>file(s)</i> to the <i>archive</i>. This will
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create <i>archive</i> if it doesn't already exist.</td>
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</tr>
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<tr>
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<td valign="top"><b>t</b></td>
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<td valign="top">
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Write the table of contents of <i>archive</i> to <i>stdout</i>.
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If not <i>file(s)</i> are specified, list all of the files,
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otherwise only list the specified files.</td>
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</tr>
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<tr>
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<td valign="top"><b>u</b></td>
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<td valign="top">
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Update older files. When used with the <b>r</b> option, files
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within the archive are only replaced if <i>file</i> has a
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modification date at least as new as the <i>file</i> already in
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the archive.</td>
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</tr>
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<tr>
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<td valign="top"><b>v</b></td>
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<td valign="top">Give verbose output.</td>
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</tr>
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<tr>
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<td valign="top"><b>x</b></td>
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<td valign="top">
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Extract <i>file(s)</i> from the <i>archive</i>. If no
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<i>file(s)</i> are specified, all of the files in <i>archive</i>
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are extracted.</td>
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</tr>
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<tr>
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<td valign="top"><i>archive</i></td>
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<td valign="top">
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The pathname of an archive file.</td>
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</tr>
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<tr>
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<td valign="top"><i>file</i></td>
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<td valign="top">
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One more more pathnames of object files; only the file name is
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used when comparing against the names of files in the
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archive.</td>
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</tr>
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</table>
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<h2>Description</h2>
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<p>The <tt>ar</tt> utility creates and maintains groups of files
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combined into a library. Once a library has been created, you can
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add new files, and extract, delete, or replace existing files.</p>
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<h2>Exit status</h2>
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<p><tt>ar</tt> exits with one of the following values:</p>
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<table>
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<tr><td valign="top">0</td>
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<td valign="top">Successful completion.</td></tr>
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<tr><td valign="top">> 0</td>
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<td>An error occurred.</td></tr>
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</table>
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<h2>Bugs</h2>
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<p>No known bugs, but <em>please</em> read the comments in the code if
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you want to use it in another application.</p>
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<h2>Comments</h2>
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<p>This is a POSIX 1003.2-1992 based <tt>ar</tt> command; it's not
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100% POSIX 1003.2 because POSIX specifies a file format for
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<tt>ar</tt> archives. The BeOS <tt>ar</tt> produces library files
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compatible (at least in theory <tt>:-)</tt>) with Metrowerks
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CodeWarrior for PowerPC.</p>
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<p>This <tt>ar</tt> and its source code were written as a service to
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the Be developer community, to make it easier for us to port UNIX
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applications and libraries. The code was written from scratch, after
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reverse-engineering the Metrowerks library and object file format
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(mostly because the library/object file format documentation was
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incorrect).</p>
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<p>If you find this useful, please
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<a href="mailto:chrish@kagi.com">let me know</a>, and tell me what
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you're working on. Be sure to include a URL for your homepage or your
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product homepages for my
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<a href="http://www.qnx.com/~chrish/Be/community/">Be Community</a>
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pages.</p>
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<p>If you find any bugs, please try to fix them, and send me a context
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diff (use <tt>diff -c original_file fixed_file</tt>) so I can include
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your fixes in the next update. I <i>have</i> tested this, but these
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things have a way of slipping though.</p>
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<p>If you'd like to know what other things I'm working on, take a look
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at my <a href="http://www.qnx.com/~chrish/Be/software/">Be
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Software</a> pages, and my
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<a href="http://www.qnx.com/~chrish/Be/">Be Happy!</a> pages.</p>
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<h2>License</h2>
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<p>This program binary and its source code have been donated to the
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BeOS Developer Community by Arcane Dragon Software free of charge.
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You can do whatever you want with it.</p>
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<p>If you <em>really</em> want to show your appreciation, you could
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always send me a gift of some sort; cool software you wrote, nice
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pictures for my desktop, ZIP drive disks, RAM, hard drives, post
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cards, a pointer to a really cool/useful/interesting web site,
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an MPEG audio file of an interesting band (make sure you can give me
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enough information to track down their CDs if I like it!), <i>etc.</i>
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Send me some <a href="mailto:chrish@kagi.com">email</a> and I'll let you
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know where to send it.</p>
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<p>But you don't have to do anything. Just write good BeOS software.
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But you're already doing that, right?</p>
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<h2>Disclaimer</h2>
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<p>You use this at your own risk. I've tried to ensure that the code
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is correct, but software usually has bugs. If <tt>ar</tt> destroys
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your valuable data, formats your hard drive, kicks your cat, and lets
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the air out of your tires, I'm not responsible for it. The code is
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here, so you should feel fairly safe that there's nothing evil going
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on.</p>
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<p>And, as I learned once again in December 1997, you really should
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keep backups of everything. I only lost a day's work, but it was
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still annoying, and it could've been much, much worse.</p>
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<h3>A word about the code</h3>
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<p>This code isn't meant to be the ultimate in efficiency or speed,
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it's intended to be fairly easy to understand and maintain
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(hopefully). I was also quite keen on having something that was
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correct, without jumping through a lot of unnecessary hoops.</p>
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<p>If you think this code sucks, don't use it. You're already applying
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this to your choice of operating system! <tt>:-)</tt></p>
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<h2>Versions</h2>
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<dl compact>
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<dt><strong>1.1 (April 18, 1998)</strong></dt>
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<dd>Changes include:
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<ul>
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<li>Extract option (<b>x</b>) will preserve a file's mode bits
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when overwriting an existing file (this may go away if it's
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not POSIX behaviour).</li>
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<li>Extracted files will now have the proper file type.</li>
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<li>Removed attempt to use <i>umask()</i> to set newly created
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archive's mode bits; apparently, I'm not sure how it
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works and my POSIX manual isn't helping.</li>
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<li>Should be 100% endian-neutral now; using this on BeOS for
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x86 is only useful if you're manipulating <em>PowerPC</em>
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objects though. The <tt>ar</tt> in
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<a href="http://www.ninemoons.com/GG/index.html">GeekGadgets</a>
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should work fine for x86 objects/libraries.</li>
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<li>Updated the <tt>README.txt</tt> file; now it's got useful
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information about building/using the POSIX ar.</li>
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</ul></dd>
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<dt><strong>1.0 (January 13, 1998)</strong></dt>
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<dd>Initial release.</dd>
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</dl>
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<hr>
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<p>Chris Herborth (<a href="mailto:chrish@qnx.com">chrish@qnx.com</a>)</p>
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<!-- hhmts start -->
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Last modified: $Date$
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<!-- hhmts end -->
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</body> </html>
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