TLS encryption is wonderful if it is running over a reliable transport protocol like TCP; but if your needs call for the less reliable UDP transport, you'd better start learning about DTLS.

If you wanted to assign a flavor to the Quicksort algorithm, it would be sweet and sour. Sweet, because it is very elegant; sour, because typical implementations sometimes leave more questions than they answer.

Linux and science are a natural fit. These are a handful of essential software packages both for getting work done and presenting it to others.

How do you find a process running on a Linux system by start time? The question sounds trivial, but the answer is trickier than it first appears.

Shell scripts are often written for simplicity rather than efficiency. A closer look at the processes can lead to easy optimization.

If you are looking for ways to speed up your Linux, consider this collection of curated performance tweaks.

When the history function fails and the manpage is too long, navi comes to the rescue with an interactive cheat sheet for the shell.

It's getting easier to measure the environmental impact of software. A new study suggests criteria for determining how the choice of software impacts resource use.

What cannot be measured cannot be improved. Netdata lets you measure almost anything – at least as long as it's about the performance and health of a Linux computer.

The kernel supports performance analysis with built-in tools via the Linux performance counters subsystem. perf is easy to use and offers a detailed view of performance data.