function twirl
{
TCOUNT="0" # For each TCOUNT the line twirls one increment

while :    # Loop forever...until you break out of the loop
do
     TCOUNT=$(expr ${TCOUNT} + 1) # Increment the TCOUNT
     case ${TCOUNT} in
     "1") echo '-'"\b\c"
          sleep 1
          ;;
     "2") echo '\\'"\b\c"
          sleep 1
          ;;
     "3") echo "|\b\c"
          sleep 1
          ;;
     "4") echo "/\b\c"
          sleep 1
          ;;
       *) TCOUNT="0" ;;  # Reset the TCOUNT to "0", zero.
     esac
done
# End of twirl finction
}