diff --git a/xCAT-client/bin/rcons b/xCAT-client/bin/rcons
index f0b430a68..b52bd38f7 100755
--- a/xCAT-client/bin/rcons
+++ b/xCAT-client/bin/rcons
@@ -2,6 +2,7 @@
 if [ -z "$1" ] || [ "$1" = "-h"  ]; then
     echo "rcons - remotely accesses the serial console of a node"
     echo "rcons <singlenode> [conserver] [-f]"
+    echo "rcons <singlenode> [conserver] [-s]"
     echo "rcons [-h|--help|-v|--version]"
     exit 0
 fi
@@ -15,10 +16,21 @@ if [ -n "$3" ] && [ "$3" = "-f" ]; then
     CONSERVER=$2
 fi
 
+#console spy mode
+if [ -n "$3" ] && [ "$3" = "-s" ]; then
+    FORCE=-s
+    CONSERVER=$2
+fi
+
 if [ -n "$2" ] && [ "$2" = "-f" ]; then
     FORCE=-f
 fi
 
+#console spy mode
+if [ -n "$2" ] && [ "$2" = "-s" ]; then
+    FORCE=-s
+fi
+
 if [ -z "$CONSERVER" ]; then
         CONSERVER=`nodels $1 nodehm.conserver 2>/dev/null | awk -F: '{print $2}' | tr -d ' '`
 fi