Regular Expressions #1: Introduction
Regular expressions don’t have to invoke anxiety and fear, although they do for many of us. The function of regular expressions is to provide a highly flexible tool for matching strings of characters in a stream of data. When a match is found, the program’s action can be as simple as to pass the line of data in which it’s found on to STDOUT, or as copmplex as replacing that string with another.
Seven Linux commands just for fun
Linux was developed by fun-loving people who created an array of fun and even comical commands. Try playing around with these yourself when you want a smile.
How to use udev
Udev is flexible but complex. Learn how to use udev so you can customize how Linux recognizes your devices.
Use lspci on Linux to see your hardware
Sometimes you need to identify the hardware in a system. One command used for this is lspci.
Tweak your system performance with ‘noatime’
Turn off “access time” to make a slight but noticeable improvement on system performance.
The real differences between less, more, and most
Find out what sets these famous Linux pagers apart from one another, and how to choose the right one for your system.
Using tar and ssh for backups
Couples complement each other and each member of the couple contributes unique and irreplaceable parts to the whole. But some couples are very odd. Such is the case with this couple of commands – the tar and ssh commands.
An introduction to the GNU Core Utilities
Most everything a Linux sysadmin needs to do can be found in the GNU coreutils or util-linux.
Navigating the ‘top’ Command in Linux
When checking out Linux systems (or even troubleshooting computers running other operating systems), the top command provides information to assess the computer’s overall health.
It can give a quick overview of what is happening on servers or other Linux systems, including Raspberry Pi with a dynamic real-time view of a running system. But there is so much more to the top command than meets the eye.
Using ‘if’ in a Bash script
Writing a short Bash script can save typing lots of instructions at the command line.
Check disk usage in Linux
Using these tools can show how much of your disk is being used no matter how much storage you have.
Using logical operators on the Bash command line
Add powerful logic to the command line with control operators in compound commands.
Supercharge LibreOffice with Command Line Automation
Did you know that one of LibreOffice’s powers is the ability to operate from the command line like converting documents from one format to another?
Getting the most out of your NVME drives
My laptops are equipped with NVMe drives, which impress me with their incredible speed. I'm delighted by the lightning-fast boot times and seamless data read...