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System Interface and Environment Variables

The system interface and environment variables enable a program to interact with the operating system. These functions are described in detail in Environment Variables.

The system interface functions are
clearenv delete environment variables
cuserid get current userid
getenv get value of environment variable
getlogin determine user login name
iscics return CICS environment information
oslink call an OS/390 utility program
putenv update environment variable
setenv update environment variable
system execute a system command.


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