--- a/UnixOperatingSystem.st	Tue Nov 08 20:17:32 2016 +0100
+++ b/UnixOperatingSystem.st	Tue Nov 08 20:17:39 2016 +0100
@@ -3652,7 +3652,7 @@
 
 startProcess:aCommandString inputFrom:anExternalInStream outputTo:anExternalOutStream
     errorTo:anExternalErrStream auxFrom:anAuxiliaryStream
-    environment:anEvironmentDictionary inDirectory:dir showWindow:ignoredHere
+    environment:anEvironmentDictionary inDirectory:dir newPgrp:newPgrp showWindow:ignoredHere
 
     "start executing the OS command as specified by the argument, aCommandString
      as a separate process; do not wait for the command to finish.
@@ -3696,7 +3696,7 @@
                                with:err fileDescriptor
                                with:auxFd)
         fork:true
-        newPgrp:true "/ false
+        newPgrp:newPgrp
         inDirectory:dir.
 
     nullStream notNil ifTrue:[
@@ -3769,6 +3769,28 @@
     "Modified: / 15.7.1997 / 16:03:51 / stefan"
     "Modified: / 5.6.1998 / 19:03:51 / cg"
     "Created: / 12.11.1998 / 14:39:20 / cg"
+!
+
+startProcess:aCommandString inputFrom:anExternalInStream outputTo:anExternalOutStream
+    errorTo:anExternalErrStream auxFrom:anAuxiliaryStream
+    environment:anEvironmentDictionary inDirectory:dir showWindow:ignoredHere
+
+    "start executing the OS command as specified by the argument, aCommandString
+     as a separate process; do not wait for the command to finish.
+     If aCommandString is a String, the commandString is passed to a shell for execution
+     - see the description of 'sh -c' in your UNIX manual ('cmd.com' in your MSDOS manual).
+     If aCommandString is an Array, the first element is the command to be executed,
+     and the other elements are the arguments to the command. No shell is invoked in this case.
+     The command gets stdIn, stdOut and stdErr assigned from the arguments;
+     each may be nil.
+     Return the processId if successful, nil otherwise.
+     Use #monitorPid:action: for synchronization and exec status return,
+     or #killProcess: to stop it."
+
+    ^ self
+        startProcess:aCommandString inputFrom:anExternalInStream outputTo:anExternalOutStream
+        errorTo:anExternalErrStream auxFrom:anAuxiliaryStream
+        environment:anEvironmentDictionary inDirectory:dir newPgrp:true showWindow:ignoredHere
 ! !
 
 !UnixOperatingSystem class methodsFor:'executing OS commands-queries'!