/proc/acpi, or, What’s going on?
There are all kinds of interesting information inside the files in that directroy. F.ex.:
- the state of the laptop lid in /proc/acpi/button/lid/LID/state
- the state of the battery in /proc/acpi/battery/BAT1/state
- and more.
Feel free to explore.
The acpi tool
- This is a handy little utility which will tell you things like how much charge is left in your laptop battery and how long until it is depleted
Battery 1: discharging, 96%, 02:34:16 remaining
In Debian/Ubuntu it’s in the acpi Package.