UNIX on Zo/s is not a new concept. Still you need to know basic commands.
Go to TSO main menu to get into UNIX shell.
-Oget -> To copy a dataset from OMVS to TSO
-Oput -> To copy a dataset from TSO to OMVS
-Oedit -> To edit a file
The above are the basic commands for editing UNIX files.
How to edit a file
Oedit test.C ( sample C program)
How to compile and execute program
C89 -o test test.C
Command to exit from OMVS
Batch JCL for OMVS OGET and OPUT commands:
//OGET EXEC PGM=IKJEFT01 //SYSTSPRT DD SYSOUT=* //SYSTSIN DD * OGET '/usr/lpp/dfsms/bin/confighfs' '@TSO@.CONFHFS.REXX' TEXT /* //