wmbattery(1) on Linux
The text da1957b2b2c6, as Debian 9 (Stretch) shipped it.
dockable battery monitor
Flags it lists
-
-a -
-b -
-c -
-d -
-e -
-g -
-h -
-i -
-l -
-n -
-s -
-w -
-x