I am still a novice user of spectrwm. When my Lenovo T420 died on me because of low battery, I decided to find out how to add battery life info on the status bar.
I borrowed baraction.sh from arch linux spectrwm wiki and modified it to my needs:
SLEEP_SEC=5
LIFE=0
STATUS=0
#loops forever outputting a line every SLEEP_SEC secs
while :; do
LIFE=`sysctl -n hw.acpi.battery.life`
STATUS=`sysctl -n hw.acpi.battery.state`
if [ $STATUS -eq 1 ]
then echo -e " Battery Life: $LIFE% Status: Not Charging" ;
else
echo -e " Battery Life: $LIFE% Status: Charging"; fi
sleep $SLEEP_SEC
done
.spectrwm.conf should contain:
bar_action = baraction.sh
Right now the laptop doesn’t have power adapter connected and my status bar shows:
Battery life: 92% Status: Not Charging
Mission accomplished.