karaf-2.2.x/shell/commands/src/main/java/org/apache/karaf/shell/commands/ClearAction.java

/*
 * 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.karaf.shell.commands;

import org.apache.felix.gogo.commands.Command;
import org.apache.karaf.shell.console.AbstractAction;

/**
 * A command to clear the console buffer
 */
@Command(scope = "shell", name = "clear", description = "Clears the console buffer.")
public class ClearAction extends AbstractAction {

	protected Object doExecute() throws Exception {
		System.out.print("\33[2J");
		System.out.flush();
		System.out.print("\33[1;1H");
		System.out.flush();
		return null;
	}	

}