1 #!/bin/bash 2 for i in {2..100};do 3 flag=true 4 for ((k=2;k<i;k++));do 5 if [ $(($i % $k)) -eq 0 ];then 6 flag=false 7 break 8 fi 9 done 10 if $flag ;then 11 echo $i 12 fi 13 done