System & Network Admin

Other Posts Part I – JSON, Objects and Arrays Part II – The jq Command Part III – Filters Pipes The pipe is the next-most used feature of jq after filters. If you are already fami…

Automate all the things! No Makefile required! Warning: This post contains automation memes!

The computer serving jwz.org, dnalounge.com, mcom.com and others has been replaced. Please let me know if you experience any weirdness. The old one was CentOS 7 on r5a.xlarge (x86 AMD EPYC 7000, 4 CPU, 32 GB, 10 Gbps) and the new one is Amazon Linux 2023 on r6g.xlarge (ARM Graviton2, 4 CPU, 32 GB, 10 Gbps). Root volume remains st1 xfs; home-and-everything-else volume changed from gp2 ext4 to ...

Netcat is a simple, yet powerful networking utility for Linux. Learn some of the most effective tricks that you can use with this handy tool.

The Filesystem in Userspace (FUSE) framework can be used to create a "stacked" filesystem, where the FUSE piece adds specialized functionality (e.g. reporting different file metadata) atop an underlying kernel filesystem. The performance of such filesystems leaves a lot to be desired, however, so the FUSE BPF filesystem has been proposed to try to improve the performance to be close to that of the underlying native filesystem. It came up in the context of a session on FUSE passthrough earlier in the 2023 Linux Storage, Filesystem, Memory-Management and BPF Summit, but the details of FUSE BPF were more fully described by Daniel Rosenberg in a combined filesystem and BPF session on the final day of the summit.

Say goodbye to slow, clunky containers and VMs. Seamless & efficient Docker and Linux on your Mac. Fast, light, simple Docker Desktop alternative to glide through your work.

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New York City BSD User Group dmesgd

Today, we’re sharing golink, an open source private URL shortener service for tailnets.

git diff is used to show changes between various git data sources. It supports a total of 4 diff algorithms, namely myers, minimal, patience, and histogram. In this post, I give my take on when eac…

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A framework for easily creating beautiful presentations using HTML

Laptop computers let you work where ever you want. Well, just so long as there is life in your laptop’s battery. Here’s how to check your battery on the Linux command line.

Think your laptop battery is running down quicker than it should? Here's how to check Linux laptop battery health.

A look at how to use maps to communicate between eBPF and userspace programs.

In this article, we will provide a step-by-step guide on how to enable or disable IPv6 on the NGINX web server on Linux systems.

This database system scales beautifully across clusters, so your data can grow bigger than a reality TV star's ego.

In this post, I'll try to explain the syntax and use of an URL and the difference between URI, URL, URN, and URC. URL explained # This will be our example for this post: https://username:password@www

Linux 6.4 offers improved traffic flow, extended support for Wi-Fi 7, new eBPF (extended Berkeley Packet Filter) features and IPv6.

SELinux is the most popular Linux Security Module used to isolate and protect system components from one another. Learn about different access control systems and Linux security as I introduce the foundations of a popular type system.

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Having Fun with Technology

Tree is a recursive directory listing program that produces a depth indented listing of files, which is colorized ala dircolors if the LS_COLORS environment variable

Arm SystemReady SR-compliant SOAFEE reference development platform based on Ampere Altra SoC consisting of COM-HPC-ALT Server type module with Ampere Altra 32/64/80 core SoC, COM-HPC Server type carrier board, 32/64/128GB DDR4 memory (optional) and 128GB NVMe storage, liquid cooling system (optional) and 750W PSU

In this article, we will cover the fundamentals of networking bridging and bonding, and how you can configure bridge and bonding interfaces on a Ubuntu system.