can anybody help me how to add this miner to hive os plz
The most easiest way is to install older version from this link
http://download.hiveos.farm/custom/t-rex-0.5.7.tar.gzand then:
sftp user@your_rig_IP
put 'path to downloaded 0.6.3 version of t-rex' /hive/custom/t-rex/
Hope this was helpful