Sandra Henry-Stocker
Unix Dweeb
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Opinions expressed by ICN authors are their own.
Sandra Henry-Stocker has been administering Unix systems for more than 30 years. She describes herself as "USL" (Unix as a second language) but remembers enough English to write books and buy groceries. She lives in the mountains in Virginia where, when not working with or writing about Unix, she's chasing the bears away from her bird feeders.
The opinions expressed in this blog are those of Sandra Henry-Stocker and do not necessarily represent those of IDG Communications, Inc., its parent, subsidiary or affiliated companies.
How to stress test your Linux system
Stressing your Linux servers can be a good idea if you'd like to see how well they function when they're loaded down. In this post, we'll look at some tools that can help you add stress and gauge the results.
How to assess user activity in Linux
In this post, we look at commands that Linux server admins can use to view user activity
How to loop forever in bash on Linux
Looping forever on the command line or in a bash script is easy. Coming up with the reasons why you want to interrupt an infinite loop and how you want to do that requires a little more effort.
5 ways to examine the content of files on Linux
How to use the cat, more, head and tail commands to look at the content of Linux files, not just text files.
How to find and remove broken symlinks on Linux
A symlink or "symbolic link" is a Linux file that simply points at another file. If the referenced file is removed, the symlink will remain but not indicate there's a problem until you try to use it. Here are some easy ways to find...
How to use tmux to create a multi-pane Linux terminal window
tmux is a terminal multiplexer – a tool that allows you to open multiple panes in a single terminal window and run separate commands in each of them. This post provides an introduction to tmux including how to navigate between the...
How to use Windows Subsystem for Linux to open Linux on Windows 10 machines
Opening a Linux terminal on a Windows 10 desktop can help you practice your Linux skills and explore Windows from an entirely different point of view. In this post, we look at Ubuntu 18.04 running through Windows Subsystem for Linux...
How to examine processes running on Linux
The ls command is far from the only command that can let you examine running processes on Linux. Let's run through some command options and what they can tell you.
How to repeat a Linux command until it succeeds
You can easily set up a Linux command that keeps trying until it succeeds. Let's look at how to loop your way to success
Red Hat Summit 2020 virtual experience
Attending Red Hat Summit 2020 from my home office was not just informative. It was encouraging and reassuring. And, while it's over now, you can still go.
What's new in Red Hat Enterprise Linux 8.2
RHEL 8.2 has new capabilities for management of hybrid-cloud environments and container tools to help fuel cloud-native development.
How to take advantage of Linux's extensive vocabulary
Linux systems don't only know a lot of words, it has commands that can help you use them by finding words that are on the tip of your tongue or fixing your typos.
How to compress files on Linux 5 ways
There are a number of tools that you use to compress files on Linux systems, but they don't all behave the same way or yield the same level of compression. In this post, we compare five of them.
Tweaking history on Linux
The bash shell's history command in Linux makes it easy to review and reuse commands, but there's a lot you do to control how much it remembers and how much forgets.
Scheduling tasks on Linux using the at command
The at command makes it easy to schedule Linux tasks to be run at any time or date you choose. Check out what it can do for you.
Tricks for getting around your Linux file system
The cd command is probably one of the first 10 that any Linux user learns, but it's not the only way to navigate the Linux file system.Here are some other ways.
Linux firewall basics with ufw
We take a look at ufw - the uncomplicated firewall - on Linux, providing some insights and commands for making changes.
Manually rotating log files on Linux
Linux system log files are by default set to rotate. Depending on the age or size, a sequence of files moves back a step, the oldest being removed and a new one taking over as the current log file. When needed, however, you can...
Viewing and configuring password aging on Linux
With proper settings, Linux users can be forced to periodically change their passwords. Here's how to view password aging settings and how to configure some of the settings.
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