Text based spinner / countdown-timer

I've always wondered how installation scripts created spinners, and counters, etc.. So, I played around and come up with this

#!/bin/bash

TIMER=60
DIVISOR=1
COUNTER=${TIMER}
C=0

while [ $COUNTER -gt 0 ]
do
    case "$(($C % 4))" in
        0) char="/"
        ;;
        1) char="-"
        ;;
        2) char="\\"
        ;;
        3) char="|"
        ;;
    esac
echo -ne "${char} -- ${COUNTER} \r"
COUNTER=$[$COUNTER-$DIVISOR]
C=$[$C+1]
sleep $DIVISOR
done
echo -ne '\n'

Comments

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