Finding MacBook power status from command line (AC plugged in, or not)?

I want to start some rsync jobs in macOS Sierra 10.12 when the power and home network are connected, I know how to use the ipconfig command to check the IP address, but is there anyway to tell whether the power is connected besides grepping the system_profiler? (Which seems a lengthy exercise to get the small snippet)

Solution 1:

The pmset command has much shorter output than system_profiler:

pmset -g batt

The first line on my MacBook says "Now drawing from ..." either "AC Power" or "Battery Power" when it runs.

Solution 2:

pmset -g batt | head -n 1 | cut -d \' -f2

You can just use the delimiter to and escape the single quote to get the extracted text.

Solution 3:

Maybe help extracted text

pmset -g batt | head -n 1 | cut -c19- | rev | cut -c 2- | rev

output

Battery Power
AC Power