System & Network Admin

When we run certain commands in Unix/Linux to read or edit text from a string or file, we most times try to filter output to a given section of interest.

In this article, we will explore how to leverage Awk to print fields and columns, providing practical examples and explanations to demonstrate its effectiveness

Using Elixir instead of Python or Ruby for shell scripting.

Unlock Linux kernel insights with eBPF tracing. Collect performance data, troubleshoot, and gain granular visibility.

Errors are easy to make when programming multiple concurrent processes or threads. Using atomic operations and well-formed locks can help to avoid such errors.

Manage and share development environments with all the frameworks and libraries you need, then publish artifacts anywhere. Harness the power of Nix.

While most enterprises lack the expertise to directly utilize eBPF and should opt for tools configured with eBPF and extended layers of functionality, help is on the way this year.

Installing and updating the OS, managing user accounts, and looking after security are just a few of the primary responsibilities of a Linux systems administrator.

This article explores FFmpeg's capabilities for converting video, audio, and image files with practical examples in Linux.

To help reduce the load on my Postfix mail servers, I rely on Postscreen (which is built in to Postfix) to help weed out bot spam and misconfigured

stress and stress-ng are essential tools for assessing and testing the performance of Linux systems under various conditions.

In this guide, we are going to look at how to use a script and scriptreplay commands in Linux that can help you to record and replay terminal sessions.

Hard-coding is never the answer. Instead, use sshpass when you need to put a password in your Bash script.

gists - A place for me to post and share small, self-contained code snippets.

Lightweight rivals, both based on Crunchbang, OpenBox, and Debian

Configuring security in Postgres is often a highly manual task, but automation helps simplify and standardize managing access permissions.

The reason I discovered an ancient blog post the other day was that I had something new to say about Nix for the first time in over two years. The thing I want to say is this: nix-direnv is great. It fixes roughly every problem that I’ve had with nix-shell, and does so in a much nicer way than my previous ad-hoc solutions.

The 5 minutes guide to stop selling out your DNS queries to BigTech Software Development, API development, Indutrial IOT

The CLI sed is often misunderstood. Yet, it can be very useful to edit automatically a bunch of files directly in the shell or in a script.

If you are looking to create a encrypted tunnel from one Linux instance to another, the bet choice is SSH port forwarding.

Testcontainers is an opensource framework for providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Swappiness is the kernel parameter that defines how much (and how often) your Linux kernel will copy RAM contents to swap. This parameters default va...