Created
June 29, 2019 22:33
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#!/usr/bin/env bash | |
usage() { | |
cat << EOF | |
usage: power.sh -i BATTNAME [property] | |
power.sh -e | |
power.sh -h | |
EOF | |
} | |
help() { | |
cat << EOF | |
Get battery information. | |
-i Print info about powersource | |
-e Enumerate available powersources | |
-h Print help message | |
EOF | |
} | |
battery_stat() { | |
STATNAME="$(basename $1 | tr -d '\n')"; | |
case "$STATNAME" in | |
uevent ) | |
;; | |
device ) | |
;; | |
subsystem ) | |
;; | |
power ) | |
;; | |
* ) | |
{ printf " %-30s" "$STATNAME:"; cat "$1" | tr -d " "; } | |
;; | |
esac | |
} | |
getopts "hei:" opt; | |
case ${opt} in | |
e ) # Enumerate | |
echo "Available Devices:" | |
find /sys/class/power_supply/* -exec basename {} \; | |
;; | |
i ) # Info | |
if [ ! -d "/sys/class/power_supply/$OPTARG" ]; then | |
echo "Power supply $OPTARG does not exist or cannot be accessed" | |
exit | |
fi | |
if [ "3" = "$#" ]; then | |
shift $((OPTIND -1)) | |
cat "/sys/class/power_supply/$OPTARG/$1" | |
else | |
echo "Battery information for $OPTARG:" | |
for f in /sys/class/power_supply/"$OPTARG"/*; do | |
battery_stat "$f" | |
done | |
fi | |
;; | |
h ) | |
usage | |
help | |
;; | |
\? ) | |
usage | |
;; | |
esac |
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