while [ 1 ]
do
bet=""
while [ -z $bet ]
do
echo "please bet: 1-great 2-little 0-exit"
read bet
done
if [ $bet -eq 0 ]
then
break ;
elif [ $bet -eq 1 -o $bet -eq 2 ]
then
((result=$RANDOM%6+1))
if [ $bet -eq 1 ]
then
echo "dice num:$result , you select:great"
else
echo "dice num:$result , you select:little"
fi
if [ $result -gt 3 ]
then
if [ $bet -eq 1 ]
then
echo "You win"
else
echo "You loose"
fi
else
if [ $bet -eq 1 ]
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