Python 2.7 и 2.6 сосуществует на той же машине

сценарий удара Вы можете кошка Ваш файл журнала и передавать по каналу в.

#!/bin/bash

while read input; do

    for arg in $( echo $input ); do
            match=$(echo "$arg" | grep -P '([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])' )
            if [ "x${match}" = "x" ]; then
                    printf "%-s" "$arg "
            else
                    dns=$( host $arg | tail -1 | awk '{print $NF}' 2>/dev/null )
                    if [ "${dns}" == "3(NXDOMAIN)" ]; then
                            printf "%-s" "$arg "
                    else
                            if [ "x${dns}" == "x" ]; then
                                    printf "%-s" "$arg "
                            else
                                    printf "%-s" "$dns "
                            fi
                    fi
            fi
    done
done
printf "\n"

вывод похож:

tk-air:~ tim$ echo "10:45 accessed by 8.8.8.8" | ./get-dns 
10:45 accessed by FWDR-8.FWDR-8.FWDR-8.FWDR-8. 

tk-air:~ tim$ echo "10:45 accessed by 8.8.8.8 26 times" | ./get-dns 
10:45 accessed by FWDR-8.FWDR-8.FWDR-8.FWDR-8. 26 times