sijie commented on a change in pull request #1094: BP-27: New BookKeeper CLI 
URL: https://github.com/apache/bookkeeper/pull/1094#discussion_r167881457
 
 

 ##########
 File path: 
bookkeeper-tools/src/main/java/org/apache/bookkeeper/tools/cli/commands/CmdBase.java
 ##########
 @@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.bookkeeper.tools.cli.commands;
+
+import com.beust.jcommander.JCommander;
+import com.beust.jcommander.Parameter;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.bookkeeper.conf.ServerConfiguration;
+import org.apache.bookkeeper.tools.cli.helpers.Command;
+
+/**
+ * The command base for other sub commands to extend.
+ */
+@Slf4j
+public abstract class CmdBase {
+
+    // Parameters defined for this command
+
+    @Parameter(names = { "-h", "--help" }, help = true, hidden = true)
+    private boolean help;
+
+    // Parameters defined for this command (end)
+
+    protected final JCommander commander;
+    @Getter(AccessLevel.PUBLIC)
+    protected final ServerConfiguration conf;
+
+    protected CmdBase(String cmdName, ServerConfiguration conf) {
+        this(cmdName, conf, new JCommander());
+    }
+
+    protected CmdBase(String cmdName, ServerConfiguration conf, JCommander 
commander) {
+        this.conf = conf;
+        this.commander = commander;
+        this.commander.setProgramName("bookie-shell " + cmdName);
 
 Review comment:
   it isn't.

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