--- a/AbstractOperatingSystem.st	Fri Sep 02 12:32:18 2016 +0200
+++ b/AbstractOperatingSystem.st	Fri Sep 02 13:28:08 2016 +0200
@@ -1720,6 +1720,20 @@
 	onError:aBlock
 !
 
+executeCommand:aCommandString inputFrom:anInStream outputTo:anOutStream errorTo:anErrStream auxFrom:anAuxStream inDirectory:dirOrNil lineWise:lineWise showWindow:showWindow onError:aBlock
+    ^ self
+        executeCommand:aCommandString
+        inputFrom:anInStream
+        outputTo:anOutStream
+        errorTo:anErrStream
+        auxFrom:anAuxStream
+        environment:nil
+        inDirectory:dirOrNil
+        lineWise:lineWise
+        showWindow:showWindow
+        onError:aBlock
+!
+
 executeCommand:aCommandString inputFrom:anInStream outputTo:anOutStream errorTo:anErrStream environment:env onError:aBlock
     "execute the unix command specified by the argument, aCommandString.
      If aCommandString is a String, the commandString is passed to a shell for execution