diff -r 6ae5e4f8329b -r c404a87db5b7 src/org/sonews/daemon/command/GroupCommand.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/sonews/daemon/command/GroupCommand.java	Sun Aug 29 17:43:58 2010 +0200
@@ -0,0 +1,102 @@
+/*
+ *   SONEWS News Server
+ *   see AUTHORS for the list of contributors
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sonews.daemon.command;
+
+import java.io.IOException;
+import org.sonews.daemon.NNTPConnection;
+import org.sonews.storage.Channel;
+import org.sonews.storage.StorageBackendException;
+
+/**
+ * Class handling the GROUP command.
+ * <pre>
+ *  Syntax
+ *    GROUP group
+ *
+ *  Responses
+ *    211 number low high group     Group successfully selected
+ *    411                           No such newsgroup
+ *
+ *  Parameters
+ *    group     Name of newsgroup
+ *    number    Estimated number of articles in the group
+ *    low       Reported low water mark
+ *    high      Reported high water mark
+ * </pre>
+ * (from RFC 3977)
+ * 
+ * @author Christian Lins
+ * @author Dennis Schwerdel
+ * @since n3tpd/0.1
+ */
+public class GroupCommand implements Command
+{
+
+  @Override
+  public String[] getSupportedCommandStrings()
+  {
+    return new String[]{"GROUP"};
+  }
+
+  @Override
+  public boolean hasFinished()
+  {
+    return true;
+  }
+
+  @Override
+  public String impliedCapability()
+  {
+    return null;
+  }
+
+  @Override
+  public boolean isStateful()
+  {
+    return true;
+  }
+  
+  @Override
+  public void processLine(NNTPConnection conn, final String line, byte[] raw)
+    throws IOException, StorageBackendException
+  {
+    final String[] command = line.split(" ");
+
+    Channel group;
+    if(command.length >= 2)
+    {
+      group = Channel.getByName(command[1]);
+      if(group == null || group.isDeleted())
+      {
+        conn.println("411 no such news group");
+      }
+      else
+      {
+        conn.setCurrentGroup(group);
+        conn.println("211 " + group.getPostingsCount() + " " + group.getFirstArticleNumber()
+          + " " + group.getLastArticleNumber() + " " + group.getName() + " group selected");
+      }
+    }
+    else
+    {
+      conn.println("500 no group name given");
+    }
+  }
+
+}