001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.geronimo.gshell;
021    
022    /**
023     * A abstraction of an executable command-line.
024     *
025     * <p>
026     * Could be a simple command or a complex command pipe-line.
027     *
028     * @version $Rev: 572185 $ $Date: 2007-09-02 15:58:11 -0700 (Sun, 02 Sep 2007) $
029     */
030    public interface CommandLine
031    {
032        /**
033         * Execute the command-line.
034         *
035         * @return  The final result of the command-line.
036         *
037         * @throws Exception    Failed to execute command-line.
038         */
039        Object execute() throws Exception;
040    }