This paper has described some ideas for design and their implementation procedures as how to recover automatic ally after some public virtual machine logon passwords for teading were altered in IBM4381 VM/SP system.

• 本文主要论述了IBM-4381 VM/SP系统中一些用于教学方面的公共虚机登录口令经修改后,如何进行自动恢复的设计思想及实现过程。