~linaro-maintainers/live-build/linaro-live-build-3

<h2><a name="s-keepingalog"></a>9.4 How can I keep a log of the packages I added to the system? I'd like to know when which package upgrades and removals have occured!</h2>

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Passing the <samp>--log</samp>-option to <code>dpkg</code> makes

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<code>dpkg</code> log status change updates and actions. It logs both the

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<code>dpkg</code>-invokation (e.g.

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<pre>

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2005-12-30 18:10:33 install hello 1.3.18 2.1.1-4

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</pre>

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) and the results (e.g.

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<pre>

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2005-12-30 18:10:35 status installed hello 2.1.1-4

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</pre>

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) If you'd like to log all your <code>dpkg</code> invokations (even those done

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using frontends like <code>aptitude</code>), you could add

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<pre>

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log /var/log/dpkg.log

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</pre>

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to your <code>/etc/dpkg/dpkg.cfg</code>. Be sure the created logfile gets

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rotated periodically. If you're using <code>logrotate</code>, this can be

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achieved by creating a file <code>/etc/logrotate.d/dpkg</code> with contents

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<pre>

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/var/log/dpkg {

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missingok

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notifempty

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}

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</pre>

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More details on <code>dpkg</code> logging can be found in the

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<code>dpkg(1)</code> manual page.

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<code>aptitude</code> logs the package installations, removals, and upgrades

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that it intends to perform to <code>/var/log/aptitude</code>. Note that the

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results of those actions are not recorded in this file!

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Another way to record your actions is to run your package management session

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within the <code>script(1)</code> program.

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<hr>

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<h2><a name="s-autoupdate"></a>9.5 Can I automatically update the system?</h2>

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Yes. You can use <code>cron-apt</code>, this tool updates the system at

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regular interval by using a cron job. By default it just updates the package

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list and download new packages without installing.

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Note: Automatic upgrade of packages is NOT recommended in

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testing or unstable systems as this might bring unexpected

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behaviour and remove packages without notice.

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<hr>

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<h2><a name="s-aptproxy"></a>9.6 I have several machines how can I download the updates only one time?</h2>

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If you have more than one Debian machine on your network, it is useful to use

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<code>apt-proxy</code> to keep all of your Debian systems up-to-date.

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<code>apt-proxy</code> reduces the bandwidth requirements of Debian mirrors by

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restricting the frequency of Packages, Releases and Sources file updates from

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the back end and only doing a single fetch for any file, independently of the

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actual request it from the proxy. <code>apt-proxy</code> automatically builds

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a Debian HTTP mirror based on requests which pass through the proxy.

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For more details, see the apt-proxy homepage at <code><a

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href="http://apt-proxy.sourceforge.net/">http://apt-proxy.sourceforge.net/</a></code>

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Of course, you can get the same benefit if you are already using a standard

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caching proxy and all your systems are configured to use it.

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<hr>

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[ <a href="ch-pkgtools.en.html">previous</a> ]

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[ <a href="index.en.html#contents">Contents</a> ]

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[ <a href="ch-basic_defs.en.html">1</a> ]

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[ <a href="ch-getting.en.html">2</a> ]

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[ <a href="ch-choosing.en.html">3</a> ]

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[ <a href="ch-compat.en.html">4</a> ]

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[ <a href="ch-software.en.html">5</a> ]

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[ <a href="ch-ftparchives.en.html">6</a> ]

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[ <a href="ch-pkg_basics.en.html">7</a> ]

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[ <a href="ch-pkgtools.en.html">8</a> ]

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[ 9 ]

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[ <a href="ch-kernel.en.html">10</a> ]

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[ <a href="ch-customizing.en.html">11</a> ]

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[ <a href="ch-support.en.html">12</a> ]

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[ <a href="ch-contributing.en.html">13</a> ]

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[ <a href="ch-redistrib.en.html">14</a> ]

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[ <a href="ch-nexttime.en.html">15</a> ]

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[ <a href="ch-faqinfo.en.html">16</a> ]

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[ <a href="ch-kernel.en.html">next</a> ]

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<hr>

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The Debian GNU/Linux FAQ

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version 4.0.3, 6 August 2008

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Authors are listed at <a href="ch-faqinfo.en.html#s-authors">Debian FAQ Authors</a>

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</address>

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<hr>

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</body>

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</html>

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