sshj Executes the command

[wzd-hash]

Hi, I have a question. I use SSHJ execute the command "nohup Java jar - server - Xms1g - Xmx1g - XX: XX: + UseG1GC - + UnlockExperimentalVMOptions - XX: G1NewSizePercent = 20 -XX:G1MaxNewSizePercent=30 -XX:+DisableExplicitGC /data/deploy/jar/nut-helloworld.jar --spring.profiles.active=dev >> /data/deploy/jar/nut-helloworld.log 2> &1&", returns a status code of 0, but it does not take effect. The same command that I wrote in the script worked when the script was executed

The code is as follows：

public static SSHClient connect(String host, Integer port, String user, String password) throws IOException {
SSHClient ssh = new SSHClient();
ssh.addHostKeyVerifier(new PromiscuousVerifier());
ssh.connect(host,port);
ssh.authPassword(user, password);
return ssh;
}

public static Result execCommand(SSHClient ssh, String command,boolean isSudo){
    Result r = new Result();
    Session session = null;
    try {
        session = ssh.startSession();
        command = getCommand(command, isSudo);
        final Session.Command cmd = session.exec(command);
        cmd.join(TIMEOUT, TimeUnit.SECONDS);
        String runLog = IOUtils.readFully(cmd.getInputStream()).toString();
        String errorLog = IOUtils.readFully(cmd.getErrorStream()).toString();
        Integer exitStatus = cmd.getExitStatus();
        r = handleResult(exitStatus, runLog, errorLog, command);
    } catch (ConnectionException e) {
        r.setStatus(-1);
        r.handleErrorLog(e.getMessage());
        r.setIsSuccess(false);
    } catch (IOException e) {
        r.setStatus(-1);
        r.handleErrorLog(e.getMessage());
        r.setIsSuccess(false);
    } finally {
        closeSession(session);
    }

    return r;
}

[hierynomus]

If you background the process (the last &), the return code will be 0 as the process will not be executed attached and the ssh command will immediately terminate.