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August 29, 2015 14:09
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Get buttery state
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| #!/bin/sh | |
| base=(/sys/class/power_supply/BAT* ) | |
| base=${base[0]} | |
| if [ ! -d $base ]; then | |
| echo 'Battery is not detected.' 1>&2 | |
| exit 1; | |
| fi | |
| now=`cat ${base}/energy_now` | |
| full=`cat ${base}/energy_full` | |
| percent=$((100 * $now / $full)) | |
| if [ $percent -le 20 ]; then | |
| printf '\e[31m' | |
| elif [ $percent -le 50 ]; then | |
| printf '\e[33m' | |
| fi | |
| echo $percent'%' | |
| printf '\e[0m' |
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