DocumentationMathematicaBuilt-in FunctionsNew in Version 3.xSystem Interface
$ParentProcessID gives the ID assigned to the process which invokes the Mathematica kernel by the operating system under which it is run.
On operating systems where no process ID is assigned, $ParentProcessID is None.
See Section 2.14.5.
See also: $ParentLink, $ProcessID, $CommandLine, $UserName, Environment.
New in Version 3.