HDFS-2725 script to mention dfs command

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1245943 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -235,6 +235,9 @@ Release 0.23.2 - UNRELEASED
     HDFS-2931. Switch DataNode's BlockVolumeChoosingPolicy to private-audience.
     (harsh via szetszwo)
 
+    HDFS-2725. hdfs script usage information is missing the information 
+    about "dfs" command (Prashant Sharma via stevel)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs

@@ -26,6 +26,7 @@ HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 function print_usage(){
   echo "Usage: hdfs [--config confdir] COMMAND"
   echo "       where COMMAND is one of:"
+  echo "  dfs                  run a filesystem command on the file systems supported in Hadoop."
   echo "  namenode -format     format the DFS filesystem"
   echo "  secondarynamenode    run the DFS secondary namenode"
   echo "  namenode             run the DFS namenode"