Index: check_sar_perf.py
===================================================================
--- check_sar_perf.py.orig
+++ check_sar_perf.py
@@ -153,11 +153,12 @@ def Main(args):
         else:
             sar = SarNRPE(myOpts[args[1]])
     else:
-        print 'ERROR: option not defined'
+        print 'ERROR: option ',args[1],' not defined'
         sys.exit(ERR_UNKN)
 
     # Output in NRPE format
-    print 'sar OK|', ' '.join(sar.stats)
+    args[0]=''
+    print 'sar OK: ',' '.join(args),'|', ' '.join(sar.stats)
 
 if __name__ == '__main__':
     Main(sys.argv)