How to execute commands as processes on the server side?

If you want the SSH server to support direct command execution, you need to configure it with a Factory which will allow that.

It can be done using the following code:

sshd.setCommandFactory(new ScpCommandFactory(new CommandFactory() {
    public Command createCommand(String command) {
        return new ProcessShellFactory(command.split(<SPAN class="code-quote">" ")).create();

This way, you can use the following:

ssh -p 8202 localhost ls -l