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Check whether laptop is running on battery or cable

Terminal - Check whether laptop is running on battery or cable
acpi -b
2010-06-10 23:23:16
User: dbbolton
Functions: acpi
Check whether laptop is running on battery or cable

The original proc file doesn't exist on my system.


There are 5 alternatives - vote for the best!

Terminal - Alternatives
cat /proc/acpi/ac_adapter/AC0/state
2010-06-10 08:53:20
User: eponafries
Functions: cat

In my case it was actually like this...

pmset -g batt # os x version
2010-06-11 17:25:19
User: sdadh01
Tags: battery acpi

If you want to do the same in OS X... grep as necessary for information you need....

acpi -a
cat /proc/acpi/ac_adapter/ACAD/state
acpi -b | sed 's/,//g' | awk '{print $3}'
2010-06-11 05:32:57
User: dbbolton
Functions: acpi awk sed
Tags: battery acpi

This prints "Charging" or "Discharging". Obviously, this will indicate the status of the AC adapter. The awk part could be from 1-6. I removed the comma because it is useless when only looking at one element of the output array. See acpi(1) for more info.

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