How to Enable a Level-2 Shell to Display Shell Prompt?

[yuhJohn]

After you log in to the SSH service using the user password and run the bash command again, no command output is displayed. However, the Linux system displays the command output.
How to solve the above problems to make the same response as Linux,

For example, after logging in to the system using the password, run the bash command and then run the ls command.
Linux:

[root@hostname -]# bash
[root@hostname -]# ls
testFolder1
testFolder2
[root@hostname -]#

mina-sshd: No shell prompt is displayed.

[root@hostname -]# bash
testFolder1
testFolder2

[tomaswolf]

Please provide your client code that shows this problem.

[yuhJohn]

Please provide your client code that shows this problem.

Actually, my implementation is limited to the server side.

By manually entering interactive commands: Start bash by pressing the Enter key, then input the ls command.

Server Code just use InteractiveProcessShellFactory and ProcessShellCommandFactory

  sshServer.setShellFactory(InteractiveProcessShellFactory.INSTANCE);
  sshServer.setCommandFactory(ProcessShellCommandFactory.INSTANCE);
  sshServer.start();

and then manually enter the command。

[tomaswolf]

Oh, that. I think you would need to run a terminal emulator on the server side. The InteractiveProcessShellFactory doesn't.

Compare running the following directly on Linux:

$ bash 2>&1 1>out.txt <<EOF
> ls
> bash
> ls
> exit
> exit
> EOF
$ cat out.txt

When I do that, out.txt contains twice the output from ls, but neither prompts nor the commands.

You might want to take a look at jline3. It has some code that shows how to use it with Apache MINA SSHD at https://github.com/jline/jline3/tree/master/remote-ssh/src/main/java/org/jline/builtins/ssh . See also SSHD-1029 and SSHD-1239.

[yuhJohn]

I solved this problem by customizing a Command.

public class CustomShellCommand implements Command {

...
public void start(ChannelSession channel, Environment env) throws IOException {

    ProcessBuilder pb = new ProcessBuilder("script", "-q", "-c", "/bin/bash -i -l", "/dev/null"); 
    bashProcess = pb.start();

 // other streaming processing

}
...
}