java执行linux指令

try {
    ProcessBuilder processBuilder = new ProcessBuilder("ls", "-l");
    Process process = processBuilder.start();
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
    process.waitFor();
} catch (IOException | InterruptedException e) {
    e.printStackTrace();
}

try {
    ProcessBuilder processBuilder = new ProcessBuilder("ls", "-l");
    Process process = processBuilder.start();
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
    process.waitFor();
} catch (IOException e) {
    e.printStackTrace();
} catch (InterruptedException e) {
    Thread.currentThread().interrupt();
    e.printStackTrace();
}