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#!/bin/shwhile truedo  full=$(grep "full capacity" /proc/acpi/battery/C1B5/info | tr -s ' ' |cut -d' ' -f4)  current=$(grep "remaining capacity" /proc/acpi/battery/C1B5/state | tr -s ' ' |cut -d' ' -f3)  BAT=$(echo "$current*100/$full" | bc)  cd ~/mail  for i in *; do     if [ -d $i/new ]; then       n=`ls $i/new/ | wc -l`      if [[ $n > 0 ]]; then        MAILS="$MAILS$i=$n, "      fi    fi  done  echo "$MAILS `date '+%Y-%m-%d %H:%M'` `uptime | sed 's/.*,//'` $BAT" > ~/.dwm-status  sleep 30done