JCL

JCL (Job Control Language) is a scripting language used on mainframe computers to instruct the system on how to run tasks or programs. It specifies details like which programs to execute, the input and output data, and resource requirements. Think of it as a detailed instruction manual that tells the computer exactly what steps to perform in a specific job, ensuring processes run smoothly and efficiently without manual intervention. JCL helps automate complex operations, manage resources, and coordinate multiple tasks in large-scale computing environments.