OMVS

z/oS Unix System Services or OMVS is a UNIX environment that runs in an z/OS environment. The following pages provide additional information on how these two environments coexist:

z/OS Unix System Services Information Pages

Displaying information about OMVS
Key Environment Variables
OpenEdition Parmlib
Using REXX with OMVS
SMP/E and OMVS
OMVS with the ACF2 security product
Default UIDs
OMVS file system
Accessing OMVS datasets with JCL
OMVS and Program Control
OMVS Resource Limits
OMVS Workloads
OpenEdition return codes
OMVS Shell
OMVS Escape Sequences
OMVS Help
OMVS shell utility programs
OMVS Assembler
Language Environment and OpenEdition

All supported versions of z/OS require the use of OMVS services for TCP/IP applications.

For More Information

IBM's Unix System Services Page
Linux on OS/390 page here
z/OS Unix - Release History
Unix System Services information centre
Documentation & New function APARs
Documentation for the BPXWDYN interface to dynamic allocation. Note BPXWDYN is now documented in "Using REXX and z/OS Unix System Services".
Newsgroups including OpenEdition newsgroups

General Unix information

The Unix system
Unix Guru Universe
Unix history

z/OS, SMP/E and OMVS are trademarks of IBM Corporation. ACF2 is a trademark of Computer Associates.