Scripting a shell inside a shell?

[MAD Industries]

I have a shell script (bash) which calls an application which opens a shell from a peripheral device connected to the computer. The script will not execute any commands after that until the device shell exits. How can I pass commands to the device as if I were just typing them and executing?

EDIT: nvm. i got it. delete thread please.

[Archangel-Amael]

It would have been nice if you would have posted the answer for others to learn from.