getTorexitNodes

#!/bin/bash

usage(){

cat << EOF

usage: getexitNodes -h -a 

-h prints this text
-a prints only alive nodes

EOF

}

if [ "$1" == "-h" ]; then
        usage
        exit 0
fi


exitaddFile=$(wget --quiet -O - https://check.torproject.org/exit-addresses | grep 'ExitAddress' | cut -d' ' -f2)


counter=0

#for the total number of IPs found in the exit-addresses file check the status of the exit Nodes
for ipaddr in $exitaddFile; do

        #silent ping
        ping -q -c 1 -w 1  $ipaddr > /dev/null

        #check the outcome of the ping
        if [ $? == 0 ]; then
                echo "Tor Exit Node: $ipaddr Alive..."
                let counter=counter+1 
        else
                if [ "$1" != "-a" ]; then
                        echo "Tor Exit Node $ipaddr probably down..."
                fi  
        fi  
done

echo "The total Number of the alive Tor Exit Nodes is $counter"