Providing instructions to a mainframe system

摘要

Instructions for a mainframe system are constructed by a client device by embedding an interpreted language program 121 in a job control language instruction 120, preferably by means of user input 112 and a suitable template 111. The nested instruction set 122 is sent 502 to the mainframe system 130, where it copies the interpreted language program to a temporary dataset/cache 142 and executes the commands within that program whilst it is in the temporary dataset. The mainframe may delete the cache once the program has been executed. The embedding of instructions allows any client device to access and provide commands to the mainframe without complex emulation protocols or the use of server-stored programs.