How to Use lsusb in Linux (With a Practical Example)
Learn how to use the lsusb tool in Linux with a practical example. The lsusb will list all USB devices in a system and USB hubs and provide detailed information on each of them.
How to Use lsmod in Linux (With a Practical Example)
The Linux Kernel is a mystery to most, but it need not be! Welcome to the exciting world of lsmod, a tool that lets you peek at what modules the Kernel is using, and more!
How to Use lshw in Linux (With a Practical Example)
What if there was a command which would let you, in an easy-to-read format, view all of the hardware in your Linux system? Welcome to lshw, the great tool often overlooked even by seasoned Linux professionals….
How to Use lsof in Linux (With a Practical Example)
Ever wondered how to discover what files are currently open and in use on your system? The Linux lsof command lists open files and provides plenty of extra information. Learn how to use lsof with these practical examples….
How to Use Multi-Threaded Processing in Bash Scripts
Multi-threaded programming has always been of interest to developers to increase application performance and optimize resource usage. This guide will introduce you to Bash multi-threaded coding basics….
What Is a Race Condition?
Have you ever run a race? If so, you already know that a photo finish is sometimes required to pick the winner! But what if two people arrived at the same time at the finish line? Welcome to race conditions….
How to Use ltrace to Trace Library Calls
Interesting in fixing those library errors and bugs you observe when installing a cool new program on Linux? Check out this article which shows how to use ltrace, arming you with the tool needed to debug library calls….
How to Work with Shared Object (Library) Dependencies in Linux
Error while loading shared libraries: the dreaded error that every Linux user will sooner or later run into. Something went wrong with the shared object dependencies (the libraries) used by the executable. Learn how to fix su…
How to Create a Semaphore in Bash
Are you developing a multi-threaded application? Sooner or later, you will likely need to use a Semaphore. In this article, you will learn what a Semaphore is, how to create/implement one in Bash, and more….
How to Time a Linux Program
Want to analyze how much wall clock time, kernel time, etc., a Linux program takes to run? Whether for performance testing, code optimization, or just general curiosity, this quick guide will get you started!…
What is Stack Smashing? Can it be Fixed?
Every minute of production downtime will generally cost a company money. If your application has a serious issue that causes stack smashing, you’re in for a ride. Learn what stack smashing is upfront and what can be done abou…
Asserts, Errors, and Crashes: What’s the Difference?
Computer problems. We all have them sooner or later. Knowing the ins and out of errors, asserts, crashes, and more is vital to understanding more about the problem at hand. Learn all about it.
Debugging with GDB: Digging Deeper
The powerful GNU Debugger GDB returns to the front stage. We dive deeper into stacks, backtraces, variables, core dumps, frames, and debugging than ever before. Join us for an all-new, more advanced introduction to GDB….
How to Use strace to Trace System Calls and Signals
Tracing a computer program is not reserved for only those who have the source code, can read it, and know how to use a debugger. Any Linux user can trace an executable with strace. Find out how!
How to Enlarge tmpfs Space in Linux
Have you ever heard of tmpfs in Linux? It is that small temporary file system residing within memory and installed by default on Linux distributions. Ultra-fast but usually limited in size. Can one grow it easily? Find out &a…
How Logic Gates Work: OR, AND, XOR, NOR, NAND, XNOR, and NOT
Logic gate: a cool term, but what does it mean? This article will introduce the concept of a logic gate as well as describe how each specific logic gate (OR, AND, XOR, NOR, NAND, XNOR, and NOT) works.
Linux: How to Use dpkg to Fix apt When It Breaks
Have you ever broken apt? For seasoned Linux professionals, it’s quite common (about every half year) to unwittingly break apt. If you know a few commands in dpkg, you can often fix the issue more easily! Find out how….
How Linux Signals Work: SIGINT, SIGTERM, and SIGKILL
Software interrupts on Linux and Unix systems are made via signals. There are many different Linux signals, but a few stand out and are important to understand and know: SIGINT, SIGTERM, and SIGKILL. Here’s how they work….
Setup a Completely Unlimited limits.conf Configuration for Testing Servers
No Limits! We may all like no limits, but is it really such a good idea? Usually, when there are no limits, ‘there’ll be dragons’. It is the same with limits.conf, though for testing servers, a truly unlimited limits.conf hel…
Implementing and Using a Microsoft Windows Like ‘start’ Command in Linux
If you’re used to the convenient ‘start’ command at the command prompt in Microsoft Windows, you’re likely to be a little disappointed not having the same functionality in Linux. But it need not be!
Debugging with GDB: Getting Started
That application crash need not be the end of the journey! Learn the basics of using GDB, the powerful GNU Debugger and know how to debug core dumps on Linux. Ideal for end users and debugging newcomers alike….
How to Add the Universe, Multiverse and Restricted Repositories in Ubuntu
The Ubuntu operating system can be expanded by installing packages from additional repositories, like the Universe, Multiverse and Restricted repositories. Installing these will allow you to install additional applications. F…
How to Set a User Timezone in Ubuntu and Mint Using .bashrc
Whilst many Desktop enabled Ubuntu computers have a handy GUI configuration cool, this does not help when configuring headless (i.e. screenless) instances like servers. Find out how to setup a timezone from the terminal, usin…
Define a Great Vim Profile Using .vimrc
Vim is an advanced text editor for Linux and Unix operating systems. Recently rated the #1 worldwide Linux editor, Vim is open-source and free. This article will show you how to create a great .vimrc profile….
Monitoring Temperature on The Raspberry Pi
Is your Raspberry Pi running hot? The Raspberry Pi runs a great factory-default temperature when idle, but when you use it extensively in a heated office, does it run too hot? Find out with a few simple steps….
