today's howtos

posted by Roy Schestowitz on May 10, 2023

• How To Install PostgreSQL on Fedora 38

  In this tutorial, we will show you how to install PostgreSQL on Fedora 38. Are you looking for a powerful open-source relational database management system that can handle large amounts of data with ease? Look no further than PostgreSQL!

• Bash script to read user's input

  In this tutorial, you will learn how to read the users input on bash script and then do something with the input.

  To read users input in bash we need to use the read command as shown in the example below

  In this script we are using echo command to

• [Old] How IPFS is broken

  If you have run an IPFS client you’ll notice how much it clogs your computer. Or maybe you don’t, if you are very rich and have a really powerful computer, but still, it’s not something suitable to be run on the entire world, and on web pages, and servers, and mobile devices. I imagine there may be a lot of unoptimized code and technical debt responsible for these and other problems, but the DHT is certainly the biggest part of it. IPFS can open up to 1000 connections by default and suck up all your bandwidth – and that’s just for exchanging keys with other DHT peers.

  Even if you’re in the “client” mode and limit your connections you’ll still get overwhelmed by connections that do stuff I don’t understand – and it makes no sense to run an IPFS node as a client, that defeats the entire purpose of making every person host files they have and content-addressability in general, centralizes the network and brings back the dichotomy client/server that IPFS was created to replace.

• Self-Hosted Bookmarks using DAV and httpd on OpenBSD

  I’ve long time used NextCloud and the floccus iOS App and Firefox plugin to store, manage and use my bookmarks. In reality, I don’t use the NC interface. I only use floccus ; and it works really well.

  In my journey to quit NextCloud, the only acceptable option to keep using floccus was getting a DAV self-hosted share. But, AFAIK, httpd(8) does not provide a DAV feature (yet?).

  I already use Baikal to self-host my calendars and addressbooks and it’s working great. So here’s a quick’n’dirty way to provide DAV using OpenBSD’s httpd(8) and sabre/dav.

• Around the world: How Wikipedia became a multi-datacenter deployment

  Our in-house Content Delivery Network (CDN) is deployed in multiple geographic locations. This lowers response time by reducing the distance that data must travel, through (inter)national cables and other networking infrastructure from your ISP and Internet backbones. Each caching data center that makes up our CDN, contains cache servers that remember previous responses to speed up delivery. Requests that have no matching cache entry yet, must be forwarded to a backend server in the application data center.

  If these backend servers are also deployed in multiple geographies, we lower the latency for requests that are missing from the cache, or that are uncachable. Operating multiple application data centers also reduces organizational risk from catastrophic damage or connectivity loss to a single data center. To achieve this redundancy, each application data center must contain all hardware, databases, and services required to handle the full worldwide volume of our backend traffic.

• SSH quick and easy login setup

  If you have the need for more complex SSH configuration settings it would be better to put those in your .ssh/config . This keeps your alias list clean and readable. You can simply move (part of) those parameters to said file.