Java exec executeCommandLinux(final String _command)

Description

Execute linux command in terminal and return the result.

License

Apache License

Parameter

Parameter	Description
_command	the command that will be executed.

Return

the answer of the linux command

Declaration

public static String executeCommandLinux(final String _command) 

Method Source Code

//package com.java2s;
/*//ww w .ja  v  a  2  s.co  m
 * 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.
 */

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class Main {
    /**
     * Constants that indicate whether an execution (of a command inside the
     * terminal) was successful or not.
     */
    public static final String EXECUTION_SUCCESS = "Success", EXECUTION_FAILED = "Failure";

    /**
     * Execute linux command in terminal and return the result.
     * 
     * @param _command the command that will be executed.
     * @return the answer of the linux command
     */
    public static String executeCommandLinux(final String _command) {

        Process p;
        String answer = "", s;
        try {

            //execute command
            p = Runtime.getRuntime().exec(_command);
            BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

            //fetch answer
            while ((s = br.readLine()) != null) {
                answer += s;
            }
            p.waitFor();

            //if normal termination
            if (p.exitValue() == 0) {
                answer = EXECUTION_SUCCESS + ": " + answer;
            } else {
                answer = EXECUTION_FAILED + ": " + answer;
            }

            //destroy execution process and return the result
            p.destroy();
            return answer;

        } catch (Exception e) {

            //print stack trace and return the failure message.
            //           e.printStackTrace();
            return EXECUTION_FAILED;
        }
    }
}

Related

1. executeCommand2(boolean isProcessBuilder, String command)
2. executeCommandAndExtractStdOut(String cmd)
3. executeCommandForceDir(String baseCommand, String osPath, File file)
4. executeCommandLine(String command)
5. executeCommandLineReturnAll( final String[] command)
6. executeDELETE(String parameters)
7. executeDotCommand(final File dotFile)
8. executeGET(DataInputStream sockInp, DataOutputStream sockOutp)
9. executeGetStatus(ProcessBuilder pb)