Tags: SysAdmin

Selectively Deploying your Superpowers on Linux

The sudo command is very handy when you need to run occasional commands with superuser power, but you can sometimes run into problems when it doesn’t do everything you expect it should. Say you want to add an important message at the end of some log file and you try something like this: $ echo "...
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Linux Foundation Offers Open Source Certification Exams from Anywhere

As the use of open-source software continues to grow for businesses of all sizes, a shortage of qualified IT administrators and other staff members who are trained, experienced and certified in open-source technologies remains a serious challenge for IT departments and the channel. To help bridge...
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LF training
Sign up now to save big on training and certification from The Linux Foundation.

Get Cyber Monday Savings on Linux Foundation Training and Certification

It’s time for our biggest sale of the year. The Linux Foundation’s annual Cyber Monday event means you can get trained and get certified at a huge discount. And, you’ll get a free T-shirt with every purchase! Through the limited-time Cyber Monday training sale, we’re offering prep course and...
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The alias And unalias Commands Explained With Examples

You may forget the complex and lengthy Linux commands after certain period of time unless you’re a heavy command line user. Sure, there are a few ways to recall the forgotten commands. You could simply save the frequently used commands and use them on demand. Also, you can bookmark the important...
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SSH
Check out these three SSH GUI options for Linux.

Three SSH GUI Tools for Linux

At some point in your career as a Linux administrator, you’re going to use Secure Shell (SSH) to remote into a Linux server or desktop. Chances are, you already have. In some instances, you’ll be SSH’ing into multiple Linux servers at once. In fact, Secure Shell might well be one of the most-used...
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Schedule One-Time Commands with the Unix at Tool

Cron is nice and all, but don't forget about its cousin at. ...even though I've been using Linux for 20 years, I still learn about new (to me) command-line tools all the time. In this "Back to Basics" article series, I plan to cover some of the command-line tools that those new to Linux may never...
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networking
We take a practical look at some TCP/IP fundamentals, so you can manage multiple network connections.

Practical Networking for Linux Admins: TCP/IP

Get to know networking basics with this tutorial from our archives. Linux grew up with a networking stack as part of its core, and networking is one of its strongest features. Let's take a practical look at some of the TCP/IP fundamentals we use every day. It's IP Address I have a peeve. OK, more...
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How to Install a Device Driver on Linux

...most default Linux drivers are open source and integrated into the system, which makes installing any drivers that are not included quite complicated, even though most hardware devices can be automatically detected.  To learn more about how Linux drivers work, I recommend reading An Introduction...
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The Great "DevOps Engineer" Title Debate

At the DevOps Enterprise Summit in Las Vegas last month, DevOps author and researcher Gene Kim unveiled his latest definition of DevOps: The architecture, technical practices, and cultural norms that enable us to: increase our ability to deliver applications and services; quickly and safely, which...
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An Introduction to Udev: The Linux Subsystem for Managing Device Events

Udev is the Linux subsystem that supplies your computer with device events. In plain English, that means it's the code that detects when you have things plugged into your computer, like a network card, external hard drives (including USB thumb drives), mouses, keyboards, joysticks and gamepads, DVD...
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