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.

Exploring /run on Linux

How to send email from the Linux command line

How to send email from the Linux command line

Linux offers several commands that allow you to send email from the command line. Here's look at some that offer interesting options.

How Linux can help with your spelling

How Linux can help with your spelling

Whether you're struggling with one elusive word or checking a report before you send it off to your boss, Linux can help with your spelling.

NVMe on Linux

NVMe on Linux

In case you haven't yet noticed, some incredibly fast solid-state disk technology is as available for Linux as it is for other operating systems.

A deeper dive into Linux permissions

A deeper dive into Linux permissions

Sometimes you see more than just the ordinary r, w, x and - designations when looking at file permissions on Linux. How can you get a clearer view of what the uncommon charactrers are trying to tell you and how do these permissions...

4 vulnerabilities and exposures affect Intel-based systems; Red Hat responds

4 vulnerabilities and exposures affect Intel-based systems; Red Hat responds

Red Hat issued a security advisory on recently disclosed CVEs (common vulnerabilities and exposures) in Intel microprocessors.

When to be concerned about memory levels on Linux

When to be concerned about memory levels on Linux

Memory management on Linux systems is complicated. Seeing high usage doesn’t necessarily mean there’s a problem. There are other things you should also consider.

Red Hat Summit 2019: RHEL 8 arrives

Red Hat Summit 2019: RHEL 8 arrives

At Red Hat Summit 2019, Red Hat announced the availability of Red Hat Enterprise Linux (RHEL) 8, with support for the Red Hat Container Toolkit, and the Universal Base Image.

Looking into Linux modules

Looking into Linux modules

The lsmod command can tell you which kernel modules are currently loaded on your system, along with some interesting details about their use.

How to identify same-content files on Linux

How to identify same-content files on Linux

Copies of files sometimes represent a big waste of disk space and can cause confusion if you want to make updates. Here are six Linux commands to help you identify these files.

How to identify duplicate files on Linux

How to identify duplicate files on Linux

Some files on a Linux system can appear in more than one location. Follow these instructions to find and identify these "identical twins" and learn why hard links can be so advantageous.

Working with variables on Linux

Working with variables on Linux

Variables often look like $var, but they also look like $1, $*, $? and $$. Let's take a look at what all these $ values can tell you.

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