``` #!/bin/bash function mrand(){ min=$1 max=$(($2-$min+1)) num=$(cat /dev/urandom | head -n 10 | cksum | awk -F ' ' '{print $1}') var=`expr $num % $max + $min` return $var } cnt=1 while([ $cnt -le 10 ]) do mrand 1 10 #随机函数调用 rnd=$? #获取返回值 let "cnt++" echo $rnd done exit 0 ```