battery status

With iSh, I am able to ssh into and work my device (an ipad pro) nicely. Often time I found the need to check battery status to make sure it is still enough before it gets recharged.

It'd be nice if iSH implements /proc/apm, /proc/acpi/battery or /sys/class/power_supply/ (not sure which one alpine uses to support battery status reporting) so that I can check the status at command line (or in Emacs, which has a ncie mode-line display for battery).

Thanks.

No source files or tests are identified. Start by locating iSH's handling of Linux virtual filesystems and comparing the requested /proc/apm, /proc/acpi/battery, and /sys/class/power_supply/ interfaces with Alpine's battery-status expectations; done means battery status can be queried from the command line on an iPad.

Written by the indexing model from the issue text.