Java – multiple commands using jsch

My requirements are as follows:

I tried the first step of using the sudo command to connect, but I don't know how to call the shell script after the sudo command.

In the following code, I can execute the sudo command, but after obtaining sudo access, how to execute the shell in nohup in the user masteruser So create the required files and my shell will have the owner as master user

public class SSHUploader {

    Session session = null;

    public SSHUploader(){

    }

    public void connect(){
    try {

            JSch jsch = new JSch();
            session = jsch.getSession("user","xxx.xxx.xx.xx",22);
            session.setPassword("test");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking","no");
            session.setConfig(config);
            session.connect();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    public void executeCommand(String script) throws JSchException,IOException{
        System.out.println("Execute sudo");
        String sudo_pass = "test";
        ChannelExec channel = (ChannelExec) session.openChannel("exec");
        ((ChannelExec) channel).setCommand( script);

        InputStream in = channel.getInputStream();
        OutputStream out = channel.getOutputStream();
        ((ChannelExec) channel).setErrStream(System.err);

        channel.connect();
        out.write((sudo_pass + "\n").getBytes());
        out.flush();

        byte[] tmp = new byte[1024];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(tmp,1024);
                if (i < 0)
                    break;
                System.out.print(new String(tmp,i));
            }
            if (channel.isClosed()) {
                System.out.println("exit-status: " + channel.getExitStatus());
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (Exception ee) {
                System.out.println(ee);
            }
        }
        channel.disconnect();
        System.out.println("Sudo disconnect");
    }

    public void disconnect(){
        session.disconnect();
    }


    public static void main(String... args) throws JSchException,IOException {

        SSHUploader up = new SSHUploader();
        up.connect();

        up.executeCommand("sudo -u masteruser bash");

        up.disconnect();
    }

}

Solution

To execute multiple commands in order, you can create the following command string:

String script ="pbrun su - user; cd /home/scripts;./sample_script.sh”

Execute it and pass this string to the above method