So....long story short, I have a total of Eighteen S3+ Antminers that are in a building that for most of the time is not used.  Every once in a while, however, it is used, so I want to be able to easily drop the fan noise down via a scripted approach. I have Teamviewer access to a live system there and I've used Putty to SSH into individual miners to change frequency on individual units. What would be a good scripted approach to change them en masses from say 250M to 212.5M and back?  Sequential IPs and all same username/PW...

Thanks in advance!