--- a/AbstractOperatingSystem.st	Tue Nov 08 21:28:04 2016 +0100
+++ b/AbstractOperatingSystem.st	Tue Nov 08 21:29:05 2016 +0100
@@ -1,3 +1,5 @@
+"{ Encoding: utf8 }"
+
 "
  COPYRIGHT (c) 1988 by Claus Gittinger
 	      All Rights Reserved
@@ -993,7 +995,12 @@
 
     "raise an error: must be redefined in concrete subclass(es)"
 
-    ^ self subclassResponsibility
+    ^ self
+        startProcess:aCommandString inputFrom:anExternalInStream outputTo:anExternalOutStream
+        errorTo:anExternalErrStream auxFrom:anExternalAuxStreamOrNil environment:environment 
+        inDirectory:dir newPgrp:true showWindow:showWindowBooleanOrNil
+
+    "Modified: / 08-11-2016 / 21:24:27 / cg"
 ! !
 
 !AbstractOperatingSystem class methodsFor:'executing OS commands-private'!