

<div style='background:#ffffff; color:#000; font-family:monospace; padding:0; max-width:900px; margin:20px auto; border:3px solid #000;'><div style='background:#000080; color:#fff; padding:6px 12px; font-weight:bold;'>✏ 编辑: rebuild-from-update-hook.html</div><div style='padding:20px;'><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#fff; color:#000; border:2px solid #000; font-family:monospace; padding:10px;'>&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.1//EN&quot;
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&lt;body class=&quot;article&quot;&gt;
&lt;div id=&quot;header&quot;&gt;
&lt;h1&gt;How to rebuild from update hook&lt;/h1&gt;
&lt;/div&gt;
&lt;div id=&quot;content&quot;&gt;
&lt;div id=&quot;preamble&quot;&gt;
&lt;div class=&quot;sectionbody&quot;&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;The pages under &lt;a href=&quot;http://www.kernel.org/pub/software/scm/git/docs/&quot;&gt;http://www.kernel.org/pub/software/scm/git/docs/&lt;/a&gt;
are built from Documentation/ directory of the git.git project
and needed to be kept up-to-date.  The www.kernel.org/ servers
are mirrored and I was told that the origin of the mirror is on
the machine $some.kernel.org, on which I was given an account
when I took over Git maintainership from Linus.&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;The directories relevant to this how-to are these two:&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;/pub/scm/git/git.git/       The public Git repository.
/pub/software/scm/git/docs/ The HTML documentation page.&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;So I made a repository to generate the documentation under my
home directory over there.&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;$ cd
$ mkdir doc-git &amp;amp;&amp;amp; cd doc-git
$ git clone /pub/scm/git/git.git/ docgen&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;What needs to happen is to update the $HOME/doc-git/docgen/
working tree, build HTML docs there and install the result in
/pub/software/scm/git/docs/ directory.  So I wrote a little
script:&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;$ cat &amp;gt;dododoc.sh &amp;lt;&amp;lt;\EOF
#!/bin/sh
cd $HOME/doc-git/docgen || exit&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;unset GIT_DIR&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;git pull /pub/scm/git/git.git/ master &amp;amp;&amp;amp;
cd Documentation &amp;amp;&amp;amp;
make install-webdoc
EOF&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;Initially I used to run this by hand whenever I push into the
public Git repository.  Then I did a cron job that ran twice a
day.  The current round uses the post-update hook mechanism,
like this:&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;$ cat &amp;gt;/pub/scm/git/git.git/hooks/post-update &amp;lt;&amp;lt;\EOF
#!/bin/sh
#
# An example hook script to prepare a packed repository for use over
# dumb transports.
#
# To enable this hook, make this file executable by &quot;chmod +x post-update&quot;.&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;literalblock&quot;&gt;
&lt;div class=&quot;content&quot;&gt;
&lt;pre&gt;&lt;code&gt;case &quot; $* &quot; in
*' refs/heads/master '*)
        echo $HOME/doc-git/dododoc.sh | at now
        ;;
esac
exec git-update-server-info
EOF
$ chmod +x /pub/scm/git/git.git/hooks/post-update&lt;/code&gt;&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;div class=&quot;paragraph&quot;&gt;&lt;p&gt;There are four things worth mentioning:&lt;/p&gt;&lt;/div&gt;
&lt;div class=&quot;ulist&quot;&gt;&lt;ul&gt;
&lt;li&gt;
&lt;p&gt;
The update-hook is run after the repository accepts a &quot;git
   push&quot;, under my user privilege.  It is given the full names
   of refs that have been updated as arguments.  My post-update
   runs the dododoc.sh script only when the master head is
   updated.
&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;
When update-hook is run, GIT_DIR is set to &lt;em&gt;.&lt;/em&gt; by the calling
   receive-pack.  This is inherited by the dododoc.sh run via
   the &quot;at&quot; command, and needs to be unset; otherwise, &quot;git
   pull&quot; it does into $HOME/doc-git/docgen/ repository would not
   work correctly.
&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;
The stdout of update hook script is not connected to git
   push; I run the heavy part of the command inside &quot;at&quot;, to
   receive the execution report via e-mail.
&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;
This is still crude and does not protect against simultaneous
   make invocations stomping on each other.  I would need to add
   some locking mechanism for this.
&lt;/p&gt;
&lt;/li&gt;
&lt;/ul&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;div id=&quot;footnotes&quot;&gt;&lt;hr /&gt;&lt;/div&gt;
&lt;div id=&quot;footer&quot;&gt;
&lt;div id=&quot;footer-text&quot;&gt;
Last updated 2026-09-17 06:21:46 UTC
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