X端末を中心としたネットワーク管理の問題点と監視ツール

The X Window System is very powerful to develop a network-transparent graphics window system. However it is difficult to maintain and support the system for a variety of users because of its great deal of configurability. We discuss issues t administer our network system including many X terminals focusing on the setting of X Display Manager (xdm), which provides a standard way for users to log on across the network. To Clarify the behavior of xdm, we write C-shell scripts; one of them reports the created time and terminated time of the each xdm, and another one displays the process IDs of active xdms arranging the parent-child relationship. On the basis of our consideration, we briefly describe a policy of managing the network, a configuration of X environments, a guide to a troubleshooting xdm, and so on.