HADOOP-6414. Add command line help for -expunge command. Contributed by Ravi Phulari.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@890551 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -83,6 +83,9 @@ Trunk (unreleased changes)
 
     HADOOP-6428. HttpServer sleeps with negative values. (cos)
 
+    HADOOP-6414. Add command line help for -expunge command.
+    (Ravi Phulari via tomwhite)
+
 Release 0.21.0 - Unreleased
 
   INCOMPATIBLE CHANGES

src/java/org/apache/hadoop/fs/FsShell.java

@@ -1505,6 +1505,8 @@ public class FsShell extends Configured implements Tool {
     
     String chgrp = FsShellPermissions.CHGRP_USAGE + "\n" +
       "\t\tThis is equivalent to -chown ... :GROUP ...\n";
+
+    String expunge = "-expunge: Empty the Trash.\n";
     
     String help = "-help [cmd]: \tDisplays help for given command or all commands if none\n" +
       "\t\tis specified.\n";
@@ -1527,6 +1529,8 @@ public class FsShell extends Configured implements Tool {
       System.out.println(dus);
     } else if ("rm".equals(cmd)) {
       System.out.println(rm);
+    } else if ("expunge".equals(cmd)) {
+      System.out.println(expunge);
     } else if ("rmr".equals(cmd)) {
       System.out.println(rmr);
     } else if ("mkdir".equals(cmd)) {