How to not replay the terminal session ?

Hello, thanks for you great plugin,

I try to find a way to stop playing the term session after it has been played once.
I have searched in your code but have not found.
I have tried with replay="null" and it doesn't work.
Please help me 
this is my code :
[simterm theme="ubuntu"]$ sudo apt-get install easy-rsa [/simterm]


Laetitia