Shell Programming and Scripting

trust_file=trusted-ip-list.txt
ip_file=ip-list.txt

while ip= read -r line
do
       test=`grep -w "$line" $ip_file`
       echo " "
       if [ "$ip" -e "$test" ] ; then
           echo "Trusted access at `date` by $line" > checked-trust.log
       else
           echo "Untrusted access at `date` by $line" > check-trust.log
       fi
done < "$trust_file"

while ip= read -r line

while IFS= read -r line

echo " "

trust_file=trusted-ip-list.txt
ip_file=ip-list.txt

while read ip
do
       test=`grep -w "$ip" $ip_file`
       echo "The value of test is : $test"
       if [ "$ip" = "$test" ] ; then
           echo "Trusted access at `date` by $line" > checked-trust.log
       else
           echo "Untrusted access at `date` by $line" > check-trust.log
       fi
done < $trust_file

#!/bin/bash

ip_file=ip-list.txt
trust_file=trusted-${ip_file}

while read ip; do
       if grep -w "${ip}" ${ip_file}; then
            value=Trusted
       else
            value=Untrusted
       fi
       echo "${value} access at $(date) by ${ip}" >> checked-trust.log
done < ${trust_file}