SPARK-627 , Implementing --config arguments in the scripts

bin/spark-daemons.sh

@@ -19,7 +19,7 @@
 
 # Run a Spark command on all slave hosts.
 
-usage="Usage: spark-daemons.sh [--config confdir] [--hosts hostlistfile] [start|stop] command instance-number args..."
+usage="Usage: spark-daemons.sh [--config <conf-dir>] [start|stop] command instance-number args..."
 
 # if no args specified, show usage
 if [ $# -le 1 ]; then