wmii battery status

A little code snippet to see the battery status in [wmii][]. Tested with Linux kernel 2.6.24.

[wmii]: http://www.suckless.org/wmii/

acpi() {
    max=$(awk '/full capacity/ {print $4}' /proc/acpi/battery/BAT1/info)
    cur=$(awk '/remaining capacity/ {print $3}' /proc/acpi/battery/BAT1/state)
    st=$(awk '/charging state/ {print $3}' /proc/acpi/battery/BAT1/state)
    per=$(echo "scale=2; 100/($max/$cur)" | bc)
    [ "$st" = "discharging" ] && echo "B:$per" || echo "C:$per"
}

# Status Bar Info
status() {
    echo -n $(uptime | sed 's/.*://; s/,//g') '|' $(date) '|'
            $(acpi)
}

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