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.

Setting up passwordless Linux logins using public/private keys

Locking and unlocking accounts on Linux systems

Locking and unlocking accounts on Linux systems

There are times when locking a Linux user account is necessary and times when you need to reverse that action. Here are commands for managing account access and what's behind them.

Generating numeric sequences with the Linux seq command

Generating numeric sequences with the Linux seq command

The Linux seq command can generate lists of numbers and at lightning speed. It's easy to use and flexible, too.

Unix is turning 50. What does that mean?

Unix is turning 50. What does that mean?

Unix time, also known as 'epoch time,' is the number of seconds that have passed since Jan 1, 1970. As Unix turns 50, let's take a look at what worries kernel developers.

How to tell if you’re using a bash builtin in Linux

How to tell if you’re using a bash builtin in Linux

A built-in is a Linux command that's part of whatever shell you're using. Can you tell what commands are built-ins and which are not?

7 ways to remember Linux commands

7 ways to remember Linux commands

Linux commands run from the nearly obvious to the very complicated, but there are many ways that you can easily remember and use even the most obscure commands.

Breaking Linux files into pieces with the split command

Breaking Linux files into pieces with the split command

Some simple Linux commands allow you to break files into pieces and reassemble them as needed. In this post, we'll look at the split command and some of its more useful options.

Counting down the days in Linux using bash

Counting down the days in Linux using bash

Need to know how many days there are before some important event? Let bash and the date command help with that!

Displaying dates and times your way in Linux

Displaying dates and times your way in Linux

The Linux date command provides more options for displaying dates and times than you can shake a stick at (without hurting your wrist anyway). Here are some of the more useful choices.

The many faces of awk

The many faces of awk

The awk command provides a lot more than simply selecting fields from input strings, including pulling out columns of data, printing simple text evaluating content – even doing math.

Cleaning up with apt-get

Cleaning up with apt-get

Most of us with Debian-based systems use apt-get routinely to install packages and upgrades, but how often do we pull out the cleaning tools? Let's check out some of the tool's options for cleaning up after itself.

Red Hat Responds to Zombieload v2

Red Hat Responds to Zombieload v2

Red Hat calls for updating Linux software to address Intel processor flaws that can lead to data-theft exploits

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