一个丢硬币的脚本

大家来丢硬币阿!!

代码：

#!/bin/bash

MAXTHROWS=$1
HEADS=0
TAILS=0
throw=0

print_result(){
echo the HEADS = $HEADS
echo the TAILS = $TAILS
echo
}

update_count(){
case $1 in
0)let " HEADS += 1";;
1)let " TAILS += 1" ;;
esac
}

echo

while [ "$throw" -lt "$MAXTHROWS" ]
do
let "coin = $RANDOM % 2 "
update_count $coin
let "throw += 1"
done

print_result