today's howtos

posted by Roy Schestowitz on Sep 10, 2023

• The effects of modest TCP latency (I think) on my experience with some X programs

  As I mentioned recently, I recently had an extended outage on my home Internet. When my Internet came back, it was a little bit different. My old home Internet was DSL with 14 Mbits down, 7 Mbits up, and about 7 milliseconds pings to work. The new state of my home Internet is still DSL from the same provider, but now it's 50 Mbits down, 4 Mbits up, and about 18 milliseconds pings to work at the moment. When my Internet first came back, I didn't expect to feel or see any real difference in the experience. It turns out that I was naive.

• How changing a ZFS filesystem's recordsize affects existing files

  Simplifying slightly, ZFS files (in fact all filesystem objects) are made up of zero or more logical blocks, which are all the same logical size (they may be different physical sizes on disk, for example because of ZFS compression). How big these blocks are is the file's (current) (logical) block size; all files have a logical block size. Normally there are two cases for the block size; either there is one block and it and the logical block size are growing up toward the filesystem's recordsize, or there's more than one logical block and the file's logical block size is frozen; all additional logical blocks added to the file will use the file's logical block size, whatever that is.

• Getting the right type of certificate

  This post covers my debugging of a self-signed certificate on one of my Bacula instances.

• E2EE on the web: isolating plaintext

  With the publication of Messaging Layer Security (MLS) as an RFC, I’ve been pulled into some recent discussion about bringing end-to-end encryption (E2EE) to the web. This is a topic that comes up every so often and has weirdly haunted me throughout my career. (I spent my undergrad and graduate research years working on cryptography implementations in Javascript and how to use them in applications.)

  In this post, I’m going to discuss an idea that I’ve seen coming up a lot lately: the idea of isolating plaintext in an E2EE application so that it can’t be accessed by application code. But first, some background on E2EE on the web generally.

• SaveDesktop: An Easy Way to Save Your Linux Desktop Environment Configuration Settings

  Have you ever spent hours customizing your Linux desktop environment, only to accidentally change something and lose all of your hard work? If so, you're not alone. This is a common problem, but there is a solution. Say hello to SaveDesktop, a graphical application to save your Linux desktop environment configuration settings.

• How to Install Proxmox VE on Bare Metal Step-by-Step

• Kdenlive 23.08 is Now Available to Install via Ubuntu PPA

  The popular free open-source Kdenlive video editor released version 23.08.0 more than a week ago. For those who are sticking to the native .deb package format, the official Ubuntu PPA finally updated with the new release package!

• How to Install Nobara Linux 38

  Nobara is a new Linux distro.

  The reason why Nobara looks like Fedora, is that Nobara is actually a customized version of Fedora. If you've ever used Fedora, then you may also like Nobara.

• How to Install Firefox Nightly in Ubuntu 22.04, 23.04 & 23.10

  This simple tutorial shows how to install the latest Firefox Nightly in all current Ubuntu releases! Firefox Nightly is the bleeding edge version of the web browser that updates twice a day. It contains features that are still in developments months or even years before they become mainstream.

• idroot

  • How to Fix “Exec Format Error” on Linux

    The Linux operating system is known for its robustness and flexibility, but even the most seasoned users may encounter the dreaded “exec format error.”

  • How To Install Jenkins on Fedora 38

    In this tutorial, we will show you how to install Jenkins on Fedora 38. For those of you who didn’t know, In the dynamic landscape of software development, efficiency and automation are paramount.

  • How To Install Fail2Ban on AlmaLinux 9

    In this tutorial, we will show you how to install Fail2Ban on AlmaLinux 9. For those of you who didn’t know, Fail2Ban, at its core, is a powerful intrusion prevention tool that acts as a vigilant guardian for your server.

• How to Extract and Create RAR Files in Linux

  Got an RAR file? Learn to extract the rar file in the Linux command line. Also learn to create a RAR file in this quick tutorial.