1#! /bin/bash 2 3echo -n "insert a number: " 4read num; 5while (( $num < 2 || $num > 10 )) 6do 7 echo -n "wrong input! try again: " 8 read num; 9done 10 11for (( i = 0 ; i <= $num ; i++ )) 12do 13 echo $i 14done 15 16exit 0 17 18