Index: /trunk/MagicSoft/Mars/datacenter/scripts/setup
===================================================================
--- /trunk/MagicSoft/Mars/datacenter/scripts/setup	(revision 7959)
+++ /trunk/MagicSoft/Mars/datacenter/scripts/setup	(revision 7960)
@@ -30,6 +30,10 @@
 
 export ROOTSYS=/opt/root_v5.12.00b-cvs
-export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ROOTSYS/lib
-export PATH=$PATH:$ROOTSYS/bin
+if ! export | grep $ROOTSYS |>/dev/null
+then
+   export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ROOTSYS/lib
+   export PATH=$PATH:$ROOTSYS/bin
+fi
+
 
 logpath=/magic/datacenter/autologs