The %SYSGET function
returns the value as a character string. If the value is truncated
or the variable is not defined on the operating environment, %SYSGET
displays a warning message in the SAS log.
You can use the value
returned by %SYSGET as a condition for determining further action
to take or parts of a SAS program to execute. For example, your program
can restrict certain processing or issue commands that are specific
to a user.
For details, see the
SAS documentation for your operating environment.