Programa de medicao de capacidade da bateria para bash

battery.sh

#!/bin/sh
# Local: /usr/local/bin/
# Bateria: programa de medicao de capacidade da bateria
# Autor: Fabio Lima CE
# Data: 25-12-2009

echo ""
cat /proc/acpi/battery/BAT1/info  \
| grep "last full capacity:"      \
| cut -c26-29                     \
> /tmp/bat-capacity               
BATCAP=$(cut -f1 -d" " /tmp/bat-capacity)
echo "    Ultimo carregamento:       $BATCAP mAh"

cat /proc/acpi/battery/BAT1/state \
| grep "remaining capacity:"      \
| cut -c26-29                     \
> /tmp/bat-remaining
BATREM=$(cut -f1 -d" " /tmp/bat-remaining)
echo "    Capacidade atual:          $BATREM mAh"

echo " ($BATREM * 100) / $BATCAP " | bc \
> /tmp/bat-percent
BATPER=$(cat /tmp/bat-percent)

echo "    Percentual remanecente:    $BATPER%"


# Nivel: [||||||.................]
BARRS=
DOTS=

for i in $(seq -s  " " $BATPER)
do
	if [ $(echo "$i % 4" | bc) -eq 0 ]
	then
		BARRS=$(echo $BARRS\|)
	fi 
done

for j in $(seq -s " " $(echo "100 - $BATPER" | bc))
do
	if [ $(echo "$j % 4" | bc) -eq 0 ]
	then
		DOTS=$(echo $DOTS.)
	fi
done

echo ""
echo "    Nivel: [$BARRS$DOTS]"
echo ""