Sandra Henry-Stocker

Unix Dweeb

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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.

Viewing enabled and running services on Linux with systemctl

Viewing enabled and running services on Linux with systemctl

Systemd and the systemctl command play vital roles in most of today's Linux systems. This post explains commands for peering into some aspects of how they work.

Commands to find Linux-package updates

Commands to find Linux-package updates

Here are easy ways to list upgrades available for installed packages on Fedora, Ubuntu and related Linux systems.

Find out what packages are installed on your Fedora system

Find out what packages are installed on your Fedora system

The dnf command can uncover a wealth of information about what file packages are installed on Fedora and related systems

Installing fonts on your Linux system

Installing fonts on your Linux system

If you've never looked into the availability of free fonts for Linux, you've got a big surprise coming. There are many thousands of uniquely appealing fonts, and adding them to your system is very easy.

Backing up not just your data, but your productivity

Backing up not just your data, but your productivity

When we run into a serious problem that threatens our ability to get our work done, it just might be time to rethink what "backing up" should involve.

How to dig up configuration details on your Linux system with getconf

How to dig up configuration details on your Linux system with getconf

It's not hard to look up configuration details on your Linux system. The hard thing is wrapping your brain around how many are available and what they can tell you.

Peering into binary files on Linux

Peering into binary files on Linux

Here are eight Linux commands for looking into binary files and viewing details about what executables are doing when they run.

Checking Linux system performance with sar

Checking Linux system performance with sar

The sar command can provide detailed system metrics on just about every aspect of system performance. You can query it on as as-needed basis or set it up to provide daily reports.

Rescuing a Linux system from near disaster

Rescuing a Linux system from near disaster

When a Linux user finds his system nearly out of disk space and unwilling to save files, fellow Linux users online provide a solution.

What you can find out asking which, whereis and whatis in Linux

What you can find out asking which, whereis and whatis in Linux

The where, whereis and whatis commands summarize commands, show where executables are, and point to relevant man pages.

Troubleshooting your bash scripts

Troubleshooting your bash scripts

Bash provides some handy techniques for troubleshooting bash scripts, and they're very easy to use.

Viewing compressed file content on Linux without uncompressing

Viewing compressed file content on Linux without uncompressing

You can examine the contents of compressed files on Linux systems without uncompressing the files or changing them in any way. This post explains the commands for doing that and the types of compressed files they work with.

Using Gimp to modify PDF files

Using Gimp to modify PDF files

Gimp is normally used to create or manipulate images files, but can also work with PDFs if you understand how it works and what it's limits are.

6 Linux command-line tricks for fewer keystrokes

6 Linux command-line tricks for fewer keystrokes

Linux has many tricks that can reduce the number of keystrokes it takes to type in commands. Here are six of them.

How to best set up command aliases on Linux

How to best set up command aliases on Linux

Setting up the most useful aliases on Linux is a mix of what's otherwise annoying to enter, hard to remember or typed way too often.

Red Hat announces Red Hat Edge initiative

Red Hat announces Red Hat Edge initiative

Red Hat has outlined how it can bundle existing and new features to better support edge networks, an effort it calls Red Hat Edge.

Manipulating the Ubuntu dock to keep favorite apps handy

Manipulating the Ubuntu dock to keep favorite apps handy

You can make accessing some applications on Ubuntu quite a bit easier by adding them to the dock. In this post, we look at how you can manipulate the dock -- adding applications, changing the size of its icons and even moving it to a...

Linux commands for testing connectivity and transfer rates

Linux commands for testing connectivity and transfer rates

Here are five Linux commands that can verify connection speeds, analyze delays, and test whether other systems are reachable.

Taking control of your Ubuntu desktop

Taking control of your Ubuntu desktop

Ubuntu gives you control of what files show up on your desktop – even if they're not in your Desktop folder.

10 of the best ways to get help on Linux

10 of the best ways to get help on Linux

There are many ways to get help while working on the Linux command line. Here are details on some of the most useful.

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