Guidelines for defining STDENV

The default for STDENV is /dev/null.

The following guidelines apply when you specify a z/OS UNIX file for STDENV:

It must be a text file defined with read-only access.
Specify one variable per line, in the format variable=value. Environment variable names must begin in column 1.
The file cannot have sequence numbers in it.
Tip: If you use the ISPF editor to create the file, set the sequence numbers off by typing NUMBER OFF on the command line before you begin typing the data. If sequence numbers already exist, type UNNUM to remove them and then type NUMBER OFF.

The following guidelines apply when you specify an MVS™ data set for STDENV:

It must be a sequential data set, a PDS member, a PDSE member, or an JCL in-stream data set.
The record format can be fixed or variable (unspanned).
Specify one environment variable per record, in the format variable=value. Environment variable names must begin in column 1. Do not use terminating nulls.
The data set cannot have sequence numbers in it.
Tip: If you use the ISPF editor to create the file, set the sequence numbers off by typing NUMBER OFF on the command line before you begin typing the data. If sequence numbers already exist, type UNNUM to remove them and then type NUMBER OFF.
Trailing blanks are truncated for in-stream data sets, but not for other data sets.