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The other day the boss asked me to find the e-mail address of every person who has sent mail from or that we received mail from that had a specific string in the e-mail address.. So I wrote this quick little perl script to do this.. He wanted a count and a unique list.

Here is the PERL script I wrote to do this.

This is a perl script that you can call from /etc/aliases to do a spamassassin check on mail that would normally be piped to a program. (Mailing lists for example.)

In linux setting up a virtual interface is a piece of cake. You just need to issue two commands, and you are done.

first you need to assign an ip to the cirtual interface.

I read an interesting article the other day, basically they stated that they challenge any programmer who applies to work with them to write a fizzbuzz program. This is a program that counts from 1 to 100, prints the numbers but if the number is divisible by 3 or divisible by five it would print the words fizz for 3, and buzz for 5.

A coworker asked me how to toggle a column in a table so that it was either visible or not, he wanted to do this in PHP. After looking over his code, I realized this might be something that would work and look better if done in javascript.

Now I'm not very good at javascript, and I rarely have to write any, but this is what I came up with as a working example.

Credits: This little HOWTO was taken from http://secpriv.com/viewarticle.php?id=7

Not really related to privacy or security, but I sometimes forget this command, and need to look it up. This way, I'll know exactly where to find it:

To make an ISO from your CD/DVD, place the media in your drive but do not mount it. If it automounts, unmount it.

This is kind of obfuscated, the blaugh daily comic went under, but I wanted to document the code I wrote to support this on your page, it may be useful for another site someday, or who knows my Chris Pirillo will bring back Blaugh, it was a good web comic..

Here is the PHP I wrote to display the daily Blaugh Comic on my site..

Rejecting a route, or null routing is a quick and easy way to stop a DOS or prevent someone from accessing your server. Now I should warn you, this is not a great solution, but it works. There are better ways of doing this with firewall rules.

Mounting an ISO image via the loopback device, so that you can view/edit the files before burning a CD/DVD.

I found this text on a download page at http://www.linuxhelp.net/linux_downloads/

Once you've downloaded an ISO Image you can mount it as a loopback device. This will give you access to the files in the ISO without you having to burn it to a CDROM first. In order to do this you must have loopback compiled into your Linux Kernel. (Most newer distributions will have this enabled by default).