Output unique banned IP addresses from fail2ban service log file

f2banlog.sh

#!/bin/bash

# output unique ip addresses banned by fail2log
grep "Ban " /var/log/fail2ban.log \
        | grep `date -d "1 day ago" +%Y-%m-%d` \
        | awk '{print $NF " ("$NF") "$6""}' \
        | sort \
        | uniq -c \
        | awk '{print $2" "$3" "$4" "$1}' \
        | logresolve \
        | awk '{print $4" "$1" "$2" "$3}' \
        | sort -rn