#!/bin/bash # A simple shell script to clean (delete) ~/.known_hosts file hostname entry. # This is useful when remote server reinstalled or ssh keys are changed! # ------------------------------------------------------------------------- # Copyright (c) 2007 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- host="$1" [[ $# -eq 0 ]] && { echo "Usage: $0 host.name.com"; exit 1;} ips=$(host "$host" | awk -F'address' '{ print $2}' | sed -e 's/^ //g') ssh-keygen -R "$host" for i in $ips do ssh-keygen -R "$i" done
How Do I Use This Script?
Simply run it as follows:
./script.sh www-03.nixcraft.net.in
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ips=$(host “$host” | awk -F’address’ ‘{ print $2}’ | sed -e ‘s/^ //g’)
could be shorten to: ips=$(host “$host” | awk ‘/address/ { print $NF }’)