All you need to know about Unix environment variables

All you need to know about Unix environment variables

Environment variables on Unix systems — how to understand, modify and appreciate them

08/14/17

How to use GNU's aspell to fix spelling errors in files

How to use GNU's aspell to fix spelling errors in files

The GNU aspell tool is a very clever utility for not only checking your spelling, but also fixing it.

08/07/17

Unix: Dealing with signals

Unix: Dealing with signals

Signals on Unix systems are critical to the way processes live and die. This article looks at how they're generated, how they work, and how processes receive or block them.

07/27/17

True random numbers are here — what that means for data centers

True random numbers are here — what that means for data centers

The Entropy Engine can deliver 350 Mbps of true random numbers—enough to give a data center enough random data to dramatically improve all cryptographic processes.

07/27/17

Where is IoT headed?

Where is IoT headed?

A survey of IEEE engineers reveals some interesting and surprising trends about the Internet of Things.

07/24/17

Unix: How random is random?

Unix: How random is random?

On Unix systems, there are many ways to generate random numbers and many important roles that random data plays.

07/17/17

Unix’s mysterious && and ||

Unix’s mysterious && and ||

The Unix shell's && and || operators have some interesting and not-so-obvious behaviors.

07/05/17

Viewing Linux output in columns

Viewing Linux output in columns

The column command can reformat the output from various commands to make it more useful or appealing

06/22/17

How to keep Linux from hanging up on you

How to keep Linux from hanging up on you

Want a process to keep running even after you log off? No problem. Use nohup. It's easy.

06/20/17

Improving on history—the Linux history command, that is

Improving on history—the Linux history command, that is

Ready to make the Linux history command work harder to serve your needs? Let's look at some new tricks you might want to shove up your sleeve.

06/16/17

What the jot command can do for you

What the jot command can do for you

The jot command is very handy for generating lists of numbers or characters in almost any way you might imagine

06/12/17

Dealing with NIST's about-face on password complexity

Dealing with NIST's about-face on password complexity

NIST's new guidelines for password complexity have reversed many of rules on what defines a good password

06/05/17

Eight steps to the GDPR countdown

Eight steps to the GDPR countdown

With only one year until this business-changing regulation goes into effect, it's time for companies to start planning their approach. Let's run through eight steps you can take to be ready.

05/25/17

The complexity of password complexity

The complexity of password complexity

Password complexity settings on Linux systems is a lot more interesting -- and complex -- than it might appear.

05/25/17

Who you gonna call?: Getting ready for the next cyber disaster

Who you gonna call?: Getting ready for the next cyber disaster

Today's cyber and terrorist threats are getting worse and more frequent, but you can limit the damage and lessen the likelihood of a successful attack. What are those who deal these issues everyday trying to tell us and how can we put...

05/19/17

Who's hogging the network? Bandwidth usage on a Linux system

Who's hogging the network? Bandwidth usage on a Linux system

How to get a clear view of network bandwidth usage on a Linux system.

05/15/17

Health tips for Unix systems

Health tips for Unix systems

Things to watch and tools to use to make sure your Unix/Linux systems maintain their health and vigor

05/10/17

Book Review: Practical Packet Analysis: Using Wireshark to Solve Real-World Network Problems

Book Review: Practical Packet Analysis: Using Wireshark to Solve Real-World Network Problems

The 3rd edition of this book will have you confidently using Wireshark to solve the kind of problems you're likely to run into. You'll be capturing and analyzing packets, understanding network protocols, and gaining important insights...

04/27/17

The beauty of links on Unix servers

The beauty of links on Unix servers

Symbolic and hard links can save both time and disk space. In this post, you will see how they are different and how they are created and used.

04/26/17

Nine ways to compare files on Unix

Nine ways to compare files on Unix

There are lots of ways to compare files on Unix systems and some of the choices are going to be just right for you

04/17/17

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