One of the most important things you can do for security on a Unix system is restrict root access. But the issue is more complicated than who knows root's password.
Don't forget that tomorrow is Sysadmins Day -- a good day to show love to the folks who save your butt again and again when you mess up your computer. Here are some poems, tailored just for them.
Memory is one of the most important parts of your Unix system for performance. Let's look at some commands that will tell you what you need to know about how your memory is being used.
It's no longer just a matter of "Can you remember them?". Your passwords can serve as a form of catharsis or a way to remind yourself of where you want to be in life.
The top command is one of the most commonly used tools for getting a quick glimpse at performance, but it's rarely used to capture performance in the middle of the night. With just a little effort, however, it could become one of your favorite
The diff command can be your best friend when you’re troubleshooting problems on a Unix system, but are you using it effectively as you could?
Most everything you need to know to get started as a penetration tester in less than 500 pages? This book provides a very practical hands-on introduction to the art of hacking. But you will need to sit yourself down and let your fingers get a lot o
If you're going to be shooting out email messages as part of your job, you really ought to think about your recipients' reactions. Here are some of the least reader-friendly subject lines and why they likely won't work.
Discovering hosts and services isn't just something that hackers do. A good sysadmin needs to work with an up-to-date view of the systems they manage or those they want to keep an eye on.
