Remote Shell

This is a simple remote shell. When starting the program a connected client can run commands on the host.

$ java RemoteShell 
Usage:
    RemoteShell <port> <command>

    port:		Listen port
    command:	Command to execute when client
                connect, default: bash

Build

$ javac RemoteShell.java

Example usage

Start the remote shell listening on port 3333 and send the output of uptime to a connected client

$ java RemoteShell 3333 uptime

Connect with a client (using netcat):

$ netcat localhost 3333
 22:26:30 up 9 days, 14:31,  1 user,  load average: 1.07, 1.03, 1.09

Start as a real remote shell listening on port 3333 allowing a connected client to send commands to bash and receiving the output

$ java RemoteShell 3333

Connect with a client and type some commands:

$ netcat localhost 3333

netstat -nap|grep 3333
tcp        0      0 127.0.0.1:56330         127.0.0.1:3333          ESTABLISHED 19887/netcat
tcp6       0      0 :::3333                 :::*                    LISTEN      19869/java
tcp6       0      0 127.0.0.1:3333          127.0.0.1:56330         ESTABLISHED 19869/java

ps
  PID TTY          TIME CMD
13927 pts/6    00:00:03 vim
19333 pts/6    00:00:01 vim
19869 pts/6    00:00:00 java
19888 pts/6    00:00:00 bash
19897 pts/6    00:00:00 ps
26171 pts/6    00:00:02 bash

uptime
 22:35:29 up 9 days, 14:40,  1 user,  load average: 2.22, 1.58, 1.24

exit

$

Documentation

There is a code walk-through here