Bash - simple "for loop"...

This may be usefull, it's a simple loop in BASH

#!/bin/bash
for hostname in $(cat text.txt); do
host $hostname
done

Just substitute the "text.txt" with a file containing the hosts.

.
.

Linux - Find BIG files

A little tip for linux:

To find large files on a system we can do:

$ find / -type f -size +20000k -exec ls -lh {} \;

We can use other filesystem like /home or /tmp