There was no proxy in the file /etc/yum.conf. I specified the proxy setting and now &quot;yum list updates&quot; is working. A part of the output was:<br>Loaded plugins: fastestmirror<br>Loading mirror speeds from cached hostfile<br>
 * base: <a href="http://centos.01link.hk">centos.01link.hk</a><br> * updates: <a href="http://centos.01link.hk">centos.01link.hk</a><br> * addons: <a href="http://centos.01link.hk">centos.01link.hk</a><br> * extras: <a href="http://centos.01link.hk">centos.01link.hk</a><br>
Updated Packages<br>ImageMagick.i386                     6.2.8.0-4.el5_5.2          updates         <br>ImageMagick.x86_64                   6.2.8.0-4.el5_5.2          updates         <br>NetworkManager.i386                  1:0.7.0-10.el5_5.1         updates  <br>
<br>Its written Updated Packages. Does this mean it has already updated? I thought that this command displays packages that need to be updated.<br><br>