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However, this only works for cgminer??? No need for cgminer when running an asic pointed at a pool
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A lot of miners have cgminer (or an illegal fork of it) in them.
Alas you can't always get at cgminer and change how it runs.
As DaveF mentioned above, you can watch the whole conversation between the miner and the pool.
Alas one exception, you can't see what braiins is doing ... ...