GetSystem

From the Scripting Manual
function GetSystem: string; Parameter Info: None Description: This function will return either 'windows' or 'linux, depending on the Server Operating System. NOTE: This function is for Soldat 1.3.2! Dedicated Server V2.6.0 DO NOT USE THIS FUNCTION ON SOLDAT 1.3.1/2.5.2

Examples
None. I think its obvious :)