1. OK - so no new file for each day?
2. what can I see if api-bind works? What program do I need to use this? What is the benefit/function of api-bind? Why and how do you want to use it?
1. Could you please just implement that anything passed afer -log is used for the log file name? No need for the fancy logic here. If log exists - append to the end.
2. Honestly - just ignore it. If dude has problems explaining what he needs it's not your fault neither is your obligation to do some research.
1. I have a rig configured of 14 GPUs, a set of 1070x8 and another 1080x6.
Can't run all at once because it will crash. So configure to have two processes run per set.
With the default log set, I ended up having just 1 log file for both processes which ever run second.
In this case, I would have log file for second process but lost the first.
2. Yeah! As a developer, he likes to be challenges so I did just that so he can do better each time.
So, just shut your mouth

if you do not know nothing about what others are saying.