java 怎么调用linux命令

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class ExecuteLinuxCommand {
    public static void main(String[] args) {
        try {
            // 要执行的Linux命令
            String command = "ls -l";
            
            // 执行命令
            Process process = Runtime.getRuntime().exec(command);
            
            // 获取命令输出
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
            
            // 等待命令执行完毕
            int exitCode = process.waitFor();
            System.out.println("命令执行完毕，退出码：" + exitCode);
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class ExecuteLinuxCommandWithProcessBuilder {
    public static void main(String[] args) {
        try {
            // 要执行的Linux命令
            String[] command = {"ls", "-l"};
            
            // 创建ProcessBuilder对象
            ProcessBuilder processBuilder = new ProcessBuilder(command);
            
            // 启动进程
            Process process = processBuilder.start();
            
            // 获取命令输出
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
            
            // 等待命令执行完毕
            int exitCode = process.waitFor();
            System.out.println("命令执行完毕，退出码：" + exitCode);
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}