Shell Programming and Scripting

#!/bin/bash
router_file="ips"
passwd="password.txt"
for router in cat ;$router_file do
for pass  in cat ;$passwd; do
res=$(curl -m 1   "http://${router}" --user admin:${pass} )                                              
if echo $res | grep -i "stats"; then                                                                                       
echo "https://"$router >> log                                                                                                     
fi
done
done

cat password.txt
admin
adminis@@
admins@@@

cat router_file
192.168.1.1
192.168.1.2
192.168.1.3

exec 5<file1
exec 6<file2

while read ROUTER <&5 && read PASS <&6
do
        echo "do something with router $ROUTER password $PASS"
done

exec 5<&-
exec 6<&-

while read ROUTER PASS
do
        echo "do something with router $ROUTER password $PASS"
done <routerpass