On Mon, 12 Mar 2018 00:59:21 +0100, Adam wrote in message
<20180311235921.aq6uclmmsx2ipcwf@???>:

> Hi!
> If you have a machine with a non-boring power connection (USB, etc)
> or an UPS that's recognized by the kernel (rather than just nut),
> please ls /sys/class/power_supply/ -- if you see anything other than
> "ac" or "battery" there, please send me that data.

..I have one laptop with "AC0", one with "AC", both with "BAT0".
Both my Raspberry Pis have empty /sys/class/power_supply link
trees, 3 pipe mails mailed in case you can use them.

> grep . /sys/class/power_supply/*/* | mail -s power kilobyte@???

--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.