You cannot directly call a z/OS UNIX application that resides in an HFS file from the TSO/E READY prompt. However, you can do so with a TSO/E BPXBATCH command, and with a REXX EXEC.

You cannot directly use the JCL EXEC statement to run a z/OS UNIX application program that resides in an HFS file because you cannot put an HFS filename on the JCL EXEC statement. However, by using the BPXBATCH program, you can run a z/OS UNIX application that resides in an HFS file. You supply the name of the program as an argument to the BPXBATCH program, which runs under MVS batch and invokes a z/OS UNIX shell environment. (BPXBATCH also lets you call a program directly without having to also run a shell.) You can also run a z/OS UNIX application that resides in an HFS file by calling a REXX EXEC to invoke it under MVS batch.