[casper] finding the pid of the bof process on roach2

[Paul Marganian]

I would like to use some of the same methods I learned in the casper 
tutorial:
https://casper.berkeley.edu/wiki/Introduction_to_Simulink
on roach 2, including finding the pid of my bof process and navigating 
to it's proc directory.
However, though this works on roach 1, on roach 2 I can't seem to find 
my bof process using "ps aux", nor the pidof command.

What am I missing?

thanks
Paul Marganian
NRAO Green Bank