@@ -0,0 +1,1501 @@
+/*%0A * Licensed to the University of California, Berkeley under one or more contributor license%0A * agreements. See the NOTICE file distributed with this work for additional information regarding%0A * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the%0A * %22License%22); you may not use this file except in compliance with the License. You may obtain a%0A * copy of the License at%0A *%0A * http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software distributed under the License%0A * is distributed on an %22AS IS%22 BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express%0A * or implied. See the License for the specific language governing permissions and limitations under%0A * the License.%0A */%0A%0Apackage tachyon.yarn;%0A%0Aimport java.util.Vector;%0A%0Aimport com.google.common.base.Preconditions;%0A%0A/**%0A * A shell command.%0A *%0A * TODO: to share this class into util.%0A */%0Apublic class CommandBuilder %7B%0A  private String mBase;%0A  private Vector%3CString%3E mArgs = new Vector%3CString%3E(10);%0A%0A  public CommandBuilder(String base) %7B%0A    mBase = Preconditions.checkNotNull(base);%0A  %7D%0A%0A  public CommandBuilder addArg(Object arg) %7B%0A    mArgs.add(String.valueOf(arg));%0A    return this;%0A  %7D%0A%0A  // Get final command%0A  @Override%0A  public String toString() %7B%0A    StringBuilder builder = new StringBuilder(mBase + %22 %22);%0A    for (String str : mArgs) %7B%0A      builder.append(str).append(%22 %22);%0A    %7D%0A    return builder.toString();%0A  %7D%0A%7D%0A

Add a class to build shell command to string