说明：  本文详细讨论了UNIX操作系统下实现定时自动运行指定程序的方法，该方法已经在银行网络设备管理中得到实际应用，取得很好效果。
(This article discusses in detail the UNIX operating system to achieve the scheduled automatic operation of the specified procedure, the method has been in the bank network equipment management has been the practical application, and achieved good results.)