我需要远程连接 Linux 然后执行命令

远程连接Linux并执行命令通常使用SSH（Secure Shell）协议。在Java中，你可以使用Jsch（Java Secure Shell）库或其他支持SSH的功能。以下是一个基本步骤：

1. **添加依赖** (如果你使用的是Apache Commons Net库):
对于Apache Commons Net，你需要引入`commons.net.*`包，或者对于更现代的选择，如JSch，你需要Maven或Gradle添加相应依赖。

2. **使用JSch（Java Secure Shell）**:

   import com.jcraft.jsch.*;

   JSch jsch = new JSch();
   Session session = null;
   try {
       session = jsch.getSession(user, host, port); // replace user, host and port with your credentials
       session.setPassword(password); // replace password with your actual password or use key-based authentication
       session.setConfig("StrictHostKeyChecking", "no"); // disable host key checking for development, change to "yes" in production
       session.connect();

       Channel channel = session.openChannel("exec");
       ((ChannelExec) channel).setCommand(command); // replace command with the shell command you want to execute
       channel.connect(); // execute the command

       InputStream in = channel.getInputStream();
       BufferedReader reader = new BufferedReader(new InputStreamReader(in));
       String line;
       while ((line = reader.readLine()) != null) {
           System.out.println(line);
       }

       int exitCode = channel.getExitStatus();
       if (exitCode == 0) {
           System.out.println("Command executed successfully.");
       } else {
           System.err.println("Execution failed with exit code: " + exitCode);
       }
   } finally {
       if (session != null) {
           session.disconnect();
       }
   }