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Philip Sargent 2023-03-27 02:02:23 +01:00 committed by Wookey
parent 79bfed457f
commit e049a95f8b
3 changed files with 12 additions and 4 deletions
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7
handbook/computing/computer.html
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@ -123,5 +123,10 @@ a high-power dual antenna WiFi tiny black box (Alfa 036ACH) on a small shelf hig
<p>This is now described on <a href="netconfig.html">a separate page</a>.
<hr />
Go on to: <a href="onlinesystems.html">Expo online systems</a><br />
Go on to:
<a href="../l/hut-cables.html">Hut cabling</a><br />
Go on to:
<a href="netconfig.html">Network configuration</a><br />
Go back to:
<a href="onlinesystems.html">Expo online systems</a><br />
<hr /></body></body></html>

6
handbook/computing/netconfig.html
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@ -42,7 +42,7 @@ still upright and have not been knocked sideways.
<p>The <em>Expo laptops</em> acquire a dynamic local address of this form, as does any other laptop or phone connecting to this wifi.
<h3>How it works - in words</h3>
<p>The <a href="https://en.wikipedia.org/wiki/Acer_Aspire_One">Acer Aspire One</a> netbook is running Debian Linux operating system with the lightweight <a href="https://xfce.org/">[xfce]</a> window mananger. It runs a script once every 60s which checks whether it can access the internet. If it can't, it attempts a re-login to the Gasthof wifi system, which takes 5-10 seconds. If it still can't access the internet it deletes nearly all the configuration and reloads everything - which takes about 30s.
<p>The <a href="https://en.wikipedia.org/wiki/Acer_Aspire_One">Acer Aspire One</a> netbook is running Debian Linux operating system with the lightweight <a href="https://xfce.org/">[xfce]</a> window mananger. It runs a script once every 60s which checks whether it can access the internet. If it can't, it attempts a re-login to the Gasthof wifi system, which takes 5-10 seconds. If it still can't access the internet it deletes nearly all the configuration and reloads everything - which takes about 30s. The mere fact that it accesses the internet every minute is enough for the Gasthof system to keep the connection open - until it times out completely which it does after an hour or so.
<p>Because of a permissions difficulty, the scripts on the netbook live in <var>/root/fakenet</var> so that the cron job (running as root) can access them. [This is not the usual Linux place to keep such things.] The cron file lives in the usual place in <var>/etc/cron/cron.d/fakenet</var>.
@ -135,6 +135,8 @@ the Gasthof. We continued with the wifi service in the hut but now it also conne
<p>The part of the script that logs into the Gasthof wifi was written by Mark Shinwell in 2017 and re-edited by Sam Wenham in 2019. Wookey made it more robust on expo in 2022.
<hr />
Go back to: <a href="computer.html">Basecamp computers</a><br />
Go back to
<a href="../l/hut-cables.html">Hut cabling</a><br />
Go back to: <a href="computer.html">Basecamp computers</a><br />
Go on to: <a href="onlinesystems.html">Expo online systems</a><br />
<hr /></body></body></html>

3
handbook/l/hut-cables.html
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@ -51,8 +51,9 @@
<li>We do not plug anything into the USB socket.
</ul>
<h3 id="network">Networking Software - configuration nerding</h3>
<p>This is now described on <a href="netconfig.html">a separate page</a>.
<p>This is now described on <a href="/handbook/computing/netconfig.html">a separate page</a>.
<hr />
Go back to
<a href="/handbook/computing/computer.html#network">Basecamp computers</a>.
<hr></body>