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.

Using the watch command on Linux

Using the yes command to automate responses

Using the yes command to automate responses

The Linux yes command allows you to automate responses to scripts and commands, but how it responds is up to you.

Repeating commands on Linux with or without changes

Repeating commands on Linux with or without changes

There are a lot of ways on Linux to make repeating commands easier than retyping them, and here's a nice collection of them.

Rocky Linux 9 arrives with Peridot

Rocky Linux 9 arrives with Peridot

New to Rocky Linux 9 is Peridot, a tool that makes it easy for anyone to replicate and extend Rocky Linux.

Using the eval command in Linux to run variables as commands

Using the eval command in Linux to run variables as commands

The eval command allows you to run the contents of variables as commands and can be very useful -- especially in scripts.

Finding files on Linux with the longest names

Finding files on Linux with the longest names

File names on Linux systems can be as long as 255 characters, and here's how to find the longest ones.

The Linux fold command breaks up text, drives loops

The Linux fold command breaks up text, drives loops

The Linux fold command can break long lines of text into pieces, but it can also be used to create arguments for looping in scripts.

Open-sourced tool speeds up Linux scripts via parallelization

Open-sourced tool speeds up Linux scripts via parallelization

The pa.sh tool finds sections of code that can run independently, then runs them in parallel to save time.

Counting the days on Linux

Counting the days on Linux

Linux marks time in the number of seconds since the start of the Linux epoch. Here's a script for using that information to figure how many days separate two dates expressed in traditional calendar notation.

Removing duplicate characters from a string on Linux with awk

Removing duplicate characters from a string on Linux with awk

A clever awk command can make it easy to remove duplicate characters from a string.

Using htop to check performance on Linux

Using htop to check performance on Linux

Spend some time checking out the htop tool for viewing processes and system performance and you might just find it extremely handy when you need it.

Connecting to your Linux system with your Android phone

Connecting to your Linux system with your Android phone

If you have an Android cell phone, you can install an app that allows you to connect to your Linux system and run commands in a terminal session.

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