denyhosts-remove-ip.sh

#!/bin/bash

HOST=$1

if [ -z "$HOST" ]; then
    echo "Enter host IP:"
    read HOST
fi

sudo service denyhosts stop

cd /var/lib/denyhosts
for i in $(ls)
do
    sudo mv $i $i.old
    sudo grep -v $HOST $i.old >> $i
done

sudo cp /etc/hosts.deny /tmp/hosts.deny
sudo grep -v $HOST /tmp/hosts.deny > /etc/hosts.deny

sudo service denyhosts start