Java执行cmd命令、bat脚本、linux命令，shell脚本等

1.Windows下执行cmd命令

如复制 D:\tmp\my.txt 到D:\tmp\my_by_only_cmd.txt

现文件如图示：

执行代码：

    private static void runWinCmd() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("cmd.exe /c copy D:\\tmp\\my.txt D:\\tmp\\my_by_only_cmd.txt");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

结果如图示，执行成功

2.Windows下执行bat脚本

删除多余文件，新建mytest.bat，内容如下

copy D:\tmp\my.txt D:\tmp\my_by_bat.txt
exit

现文件如图示：

执行代码：

    private static void runWinBat() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("cmd.exe /c start D:\\tmp\\mytest.bat");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

结果如图示，执行成功

3.Linux下执行命令

如复制 /opt/tmp/my.txt 到 /opt/tmp/my_by_copy.txt

现文件如图示：

执行代码：

    private static void runLinuxCommand() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("sudo cp /opt/tmp/my.txt /opt/tmp/my_by_copy.txt");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

结果如图示，执行成功

4.Linux下执行shell脚本

删除多余文件，新建mytest.sh，内容如下

sudo cp /opt/tmp/my.txt /opt/tmp/my_by_sh.txt

现文件如图示：

执行代码：

    private static void runLinuxShell() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("bash /opt/tmp/mytest.sh");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

结果如图示，执行成功

Tip：Java的Process对象的waitFor()方法返回值等于0时，说明子进程正常完成退出，如不等于0，则有相应的异常解释，可参考 此处

完整代码如下：

package com.runtime;

import java.io.IOException;

/**
 * @author: Convict.Yellow
 * @date: 2020/10/27 10:28
 * @description: TestProcess
 */
public class TestProcess {
    public static void main(String[] args) throws IOException, InterruptedException {
        runWinCmd();
        runWinBat();
        runLinuxCommand();
        runLinuxShell();
    }

    private static void runWinCmd() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("cmd.exe /c copy D:\\tmp\\my.txt D:\\tmp\\my_by_only_cmd.txt");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

    private static void runWinBat() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("cmd.exe /c start D:\\tmp\\mytest.bat");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

    private static void runLinuxCommand() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("sudo cp /opt/tmp/my.txt /opt/tmp/my_by_copy.txt");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

    private static void runLinuxShell() throws IOException, InterruptedException {
        Process proc = Runtime.getRuntime().exec("bash /opt/tmp/mytest.sh");
        int processCode = proc.waitFor();
        System.out.println("Process code: " + processCode);
    }

}