After hours and hours (and hours) (and days) I finally decided to ask for help.

I want to optimize my rigs for MPH and coin switching -

My rigs are all Ubuntu 16.04 with AMD drivers and they work great using Genoil or Claymore and just hitting the MPH ETH port.

I want to do something like this -

:start
ethminer --farm-retries 0 -G -S us-east1.ethash-hub.miningpoolhub.com:12020 -O username.workername:x -FS exit
sgminer --no-retry -k vanilla -o stratum+tcp://hub.miningpoolhub.com:12019 -u username.workername -p x
sgminer --no-retry -k groestlcoin -o stratum+tcp://hub.miningpoolhub.com:12004 -u username.workername -p x
sgminer --no-retry -k myriadcoin-groestl -o stratum+tcp://hub.miningpoolhub.com:12005 -u username.workername -p x
timeout 1
goto start

I suppose I can use cron to achieve something like this?

The BIG issue is A. I don't know what version of SGminer to use and B. The few I have tried I cannot get to compile.

If anyone is doing this on *.nix with AMD successfully please let me know how.
Also what version of sgminer (or other miner) are you using and compile help. I mean it should be simple to compile this but every version bombs out during make like on Bignum or on SHA256 or something.

Thanks for any help