install screen or use screen it should be installed, you installed as part the BFG compile .
https://www.digitalocean.com/community/tutorials/how-to-install-and-use-screen-on-an-ubuntu-cloud-server
screen works with any Linux OS.
if not this is how short version :
sudo apt-get -y install screen
screen bash
then whatever path you use for bfg
Cd /path you know for bfg and commands
then close it out by hitting
x or exit
then being ssh backup and type
screen -list
screen -r
to test it .
if it worked right bfg should still be running and you can close the SSH screen until you reboot or turn off the PC/PI .
if you set a startup script from one of the links above it should startup after reboot or shut down .
sorry i did misunderstand .
.
if you water cool let me know how that went id very interested in doing that. I just need five heat sink that fit the boards i have the rest pump rad etc . unless Innosilicon put outs A model that can do 1 GH these thing are still worth using and would be hard to find for sell till then the only set back now is power usage but if you have cheap power it won't mater or lots of speeds, it will pay for it self .
whats makes the A4 so good is it's power usages not the speed the AlcheMiner/MAT and the titans can keep up with no problem, i read some place with the right cooling on these beast with all 8 boards they can be overclocked to hit close to 300 MH at a cost in power not much but some . the key there is keeping them cool enough to handle it . with the flash from Jat it would work . other wise the A4 is king . if the company hadn't gone bankrupt they were going to make a AlcheMiner 2 or some other name i forget that beat the A4 in speed and power usage and cost less to buy but i guess they didn't get the funding they had hoped for and went bankrupt. not Mat .
Thanks top .