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today's leftovers

Submitted by Roy Schestowitz on Tuesday 21st of June 2022 12:04:46 AM Filed under
Misc
  • ChromeOS can now open more archive files including 7z, iso, and tar

    ChromeOS is now more powerful for managing files, with new support for archive formats like 7z, iso, and tar — with more on the way.

  • Linux vs. Windows vs. macOS: Which Is the Operating System for You?

    Previously, Linux GUIs paled in comparison with Windows or macOS, which offered better graphics and performance. However, that has changed now, with Ubuntu offering a stunning GUI that can easily compete with the likes of Finder and Windows Explorer.

    Installing apps on Linux is a bit complicated. Ideally, you should know your way around a command-line interface tool since that's what you'll be using most of the time. Unfortunately, that's what limits Linux's adoption; people view it as too technical to be useful daily. Furthermore, most applications are free or open source substitutes for popular Windows or macOS apps, which may not be as good as their original, proprietary counterparts.

    Backups

    Running backups on Linux is also not simple, as you need to know specific commands. However, there are some GUI tools that you can use, such as Déjà Dup. You can easily learn how to backup your data with Déjà Dup on Linux, though even that requires running some commands.

    Which Operating System Is Right For You?

    So, as you can see, all three operating systems are great in their own right. But, it all depends on what you're familiar with and what you prefer to use. For example, if you like full control, Linux is probably the best choice. But if you want something easier to use, choosing between macOS and Windows is ideal.

  • Transparent memory offloading: more memory at a fraction of the cost and power - Engineering at Meta

    But alternative technologies such as NVMe-connected solid state drives (SSDs) offer higher capacity than DRAM at a fraction of the cost and power. Transparently offloading colder memory to such cheaper memory technologies via kernel or hypervisor techniques offers a promising approach to curb the appetite for DRAM. The key challenge, however, involves developing a robust data center–scale solution. Such a solution must be able to deal with diverse workloads and the large performance variance of different offload devices, such as compressed memory, SSD, and NVM.

  • Meta: Transparent memory offloading [LWN.net]

    This Meta blog post by Johannes Weiner and Dan Schatzberg describes a set of memory-management changes used there that they call "transparent memory offloading".

  • Meta's Transparent Memory Offloading Saves Them 20~32% Of Memory Per Linux Server
  • Five things you need to know about Linux container security

    As cloud adoption soars, containers are gaining more popularity, too. Linux Containers (LXC) lead this segment, accounting for 33.5 percent of the containerization market as of 2021. This popularity makes it a tempting option for developers, but it is important to consider its security, too.

    Containers are sets of one or more processes that are isolated from the rest of the system. This allows the application to run quickly and reliably between computing environments. Containers enable infrastructures to run more productively, efficiently and cost-effectively, which is why they have become so popular.

  • BSidesSF 2022 CTF: Login4Shell

    Log4Shell was arguably the biggest vulnerability disclosure of 2021. Security teams across the entire world spent the end of the year trying to address this bug (and several variants) in the popular Log4J logging library.

    The vulnerability was caused by special formatting strings in the values being logged that allow you to include a reference. This reference, it turns out, can be loaded via JNDI, which allows remotely loading the results as a Java class.

    This was such a big deal that there was no way we could let the next BSidesSF CTF go by without paying homage to it. Fun fact, this meant I “got” to build a Java webapp, which is actually something I’d never done from scratch before. Nothing quite like learning about Jetty, Log4J, and Maven just for a CTF level.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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