check-battery-status.sh

#!/bin/bash
# check battery & AC status (Linux)
#
# * By Kordian W. <code [at] kordy.com>
#

# check that we have the right utils
which acpi >&/dev/null || {
  echo "$0: no \`ACPI' utility installed!" >&2
  exit 1
}
which upower >&/dev/null || {
  echo "$0: no \`upower' utility installed!" >&2
  exit 1
}

echo "* Battery ($(date "+%H:%M")):"
acpi -bi
upower -i $(upower -e | grep BAT) | egrep 'vendor|state|time to empty|energy-rate|energy-full|energy:|percentage|capacity|technology'

echo -e "\n* AC Power ($(date "+%H:%M")):"
acpi -ai
upower -i $(upower -e | grep AC) | egrep 'updated|online'

echo -e "\n* Misc ($(date "+%H:%M")):"
acpi -t

echo -en "\n* Available CPU Freq Power Schemes:\t\t"
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
echo -en "* Currently enabled CPU Freq Power Scheme:\t"
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

echo -e "\nNOTE: To change your processor to performance mode use:
$ echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance"

# EOF