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Counting Email Addresses By Domain in MySQL
Every so often I find some statistical need that although Perl program would be easy to write for it, its probably something the database should just handle. So I have a column in an email management table that has just the email addresses in the format user@domain.tld. I want to know which domains make up…
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Trying Out Twitter
So I have finally decided to stop being a luddite about Twitter and give it a shot. I went to a Limenal Group event held by friend Scudder Fowler. He had 3 speakers all talking about CRMs (Customer Relationship Management) and how they relate to social media. The event was great. The speakers were Penelope…
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Mac Perl Problems After Feb Update
When I did my most recent upgrade (the latest Mac software updates), it broke my Perl install. In order to figure out if your Perl is broken like mine was, you will get a result like this: 1234beacon:mail elubow$ perl -MIO IO object version 1.22 does not match bootstrap parameter 1.23 at /System/Library/Perl/5.8.8/darwin-thread-multi-2level/XSLoader.pm line 94.…
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Checking For A DoS
Working on groups of web servers, especially ones that are highly susceptible to attack, it is a good idea to have a string of commands that will allow you to check what is going on. Check for DDos: 1netstat -n | grep EST | awk ‘{ print $5 }’ | cut -d: -f1 | sort…
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Adding Yum to CentOS 5
I use a lot of VPS and often times, they don’t actually have yum to make my life easier. So here is a quick HOWTO on installing yum on a CentOS box. This assumes that you have rpm and wget already installed. Note: This will only work on CentOS 5.2 while the mirror is still…
