added stop and update usage

diff --git a/plc.d/db b/plc.d/db
index fe25507..3f0f8fd 100755 (executable)
--- a/plc.d/db
+++ b/plc.d/db
@@ -108,10 +108,7 @@ function clean_dumps()
     check
 }
 
-if [ "$PLC_DB_ENABLED" != "1" ] ; then
-    exit 0
-fi
-
+[ $PLC_DB_ENABLED -ne 1 ] && exit 0
 case "$1" in
     start)
        MESSAGE=$"Bootstrapping the database"
@@ -177,8 +174,13 @@ EOF
        result "$MESSAGE"
        ;;
 
+    stop)
+       MESSAGE=$"Ignoring request to stop myplc databases"
+       result "$MESSAGE"
+       ;;
+
     *)
-        echo "Usage: $0 [start|migrate|dump|clean-dump]"
+        echo "Usage: $0 [start|migrate|dump|checkpoint|restore|clean-dump|stop]"
        exit 1
        ;;
 esac