java执行linux

try {
    Process process = runtime.exec("ls -l");
    int exitCode = process.waitFor();
    if (exitCode != 0) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            System.err.println(line);
        }
    }
} catch (IOException | InterruptedException e) {
    e.printStackTrace();
}

try {
    Process process = runtime.exec("ls -l");
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
    reader.close();
} catch (IOException e) {
    e.printStackTrace();
}

ProcessBuilder pb = new ProcessBuilder("ls", "-l");
pb.redirectErrorStream(true);
Process process = pb.start();
process.waitFor(5, TimeUnit.SECONDS); // 设置超时时间为5秒
if (!process.waitFor()) {
    process.destroyForcibly(); // 强制终止进程
}