You may want to look in the Information Center under

Programming;CL and APIs;APIs;APIs by category;UNIX-Type;Environment
Variable APIs.

There you will find that there are system level environment variables
that are set the first time a job-level environment variable API or
CL command is used; and the Qp0zGetAllSysEnv() API which will return
a list of all system level environment variables.


>while going through a sample program i came across the function putenv();. i
>would like to know whether any environment variables will be set before my
>program is launched, if yes how can i find out a list of them.
>i have another doubt, since environment variables are like name=value why
>can't we simply use program variables (maybe global variables). it will be
>great if somebody can tell me an exact scenario to use an environment

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