sudo -H -u big bash -c '/home/big/start.sh'
Console : 2015-04-26 19:56:43 [SEVERE] Pipe failed to load from NBT at 77,102,409
So. Thats what i get on MCMA when running it via  sudo -H  -u josh bash -c '/home/josh/start.sh'
(Which is a startup script I made and works via the user josh)
I was wondering if anyone knew how to run MCMA via sudo etc