大型机JCL的的一些阅读文件，pdf格式，对学习大型机有帮助！-Some mainframe JCL to read files, pdf format, to learn mainframe help!

This book describes the job control tasks needed to enter jobs into the operating system, control the system’s processing of jobs, and request the resources needed to run jobs. To perform the tasks, programmers code job control statements. This

-This book describes the job control tasks needed to enter jobs into the operating system, control the system’s processing of jobs, and request the resources needed to run jobs. To perform the tasks, programmers code job control statements. This