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doh... problem solved. I needed to simply read:<br>
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<font color="#000099"><a class="moz-txt-link-freetext" href="http://wiki.hcoop.net/MemberManual/GettingStarted/AfsExamples">http://wiki.hcoop.net/MemberManual/GettingStarted/AfsExamples</a><br>
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Checking to see whether your tokens have expired<span class="anchor"
id="line-52"></span></font>
<p class="line874"><font color="#000099">If you are
encountering weird problems, then it is possible that your Kerberos
tokens have expired. One simple way of checking this is to run: <span
class="anchor" id="line-53"></span><span class="anchor" id="line-54"></span></font></p>
<p class="line867"><font color="#000099"><span class="anchor"
id="line-55"></span></font></p>
<pre><font color="#000099">aklog
<span class="anchor" id="line-56"></span></font></pre>
<font color="#000099"><span class="anchor" id="line-57"></span></font>
<p class="line874"><font color="#000099">If
it returns without displaying any messages to the screen, you still
have valid tokens. If it displays an error, when you will need to
authenticate to both Kerberos and AFS again by doing: <span
class="anchor" id="line-58"></span><span class="anchor" id="line-59"></span></font></p>
<p class="line867"><font color="#000099"><span class="anchor"
id="line-60"></span></font></p>
<pre><font color="#000099">kinit
<span class="anchor" id="line-61"></span>aklog</font></pre>
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