This UNIX environment is integrated with the “traditional” z/OS environment. For example, you can access a z/OS UNIX file from a batch job and you can access a data set from a z/OS UNIX application.
you can enter the z/OS UNIX environment using the OMVS command from the TSO READY prompt
What is OMVS shell?
OEDIT is the Zo/s UNix editor
If you want to write a program with “C”, the command is
==> oedit sample.c
sample C-program-
#include <stdio.h> main() { printf("Hell,world\n") }
Press “F3” to exit from the editor. Your program will be saved.
Compiling the program:
C89 -o sample sample.c
Run the program:
./sample
Then you will get result
Hello,world
Type “Exit” to come out from the OMVS.