This post follows up on Part 1 by examining the many ways that you can test the value of variables – e.g., whether they equal particular strings like “yes” or “no”, if they have a numeric value, if ...

Each Linux command returns an exit code, with 0 indicating success and non-zero values indicating failure. You can use the $? variable to access the exit code and control program flow in scripts. Be ...

The shell does far more than run commands. Here’s how Bash expands your input behind the scenes so you can write cleaner, ...

Community driven content discussing all aspects of software development from DevOps to design patterns. When you run your own executable command or shell script on Linux, you must prepend ./ to the ...

Kernel drivers are the bridge between the Linux operating system and the hardware components of a computer. They play a crucial role in managing and facilitating communication between the OS and ...