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.

How to find what you’re looking for on Linux with find

Digging up IP addresses with the Linux dig command

Digging up IP addresses with the Linux dig command

The dig command is extremely versatile both for retrieving information from domain name servers and for troubleshooting.

Navigating man pages in Linux

Navigating man pages in Linux

The man pages on a Linux system can do more than provide information on particular commands. They can help discover commands you didn't realize were available.

Intro to the Linux command line

Intro to the Linux command line

Here are some warm-up exercises for anyone just starting to use the Linux command line. Warning: It can be addictive.

Showing memory usage in Linux by process and user

Showing memory usage in Linux by process and user

There are several commands for checking up on memory usage in a Linux system, and here are some of the better ones.

Setting up passwordless Linux logins using public/private keys

Setting up passwordless Linux logins using public/private keys

Using a set of public/private keys to allow you to log into a remote Linux system or run commands using ssh without a password can be very convenient, but setup is just tad tricky. Here's how and a script to help.

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.

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