Tux Machines
Posted by Roy Schestowitz on Mar 11, 2023,
updated Mar 11, 2023
=> What Are Package Dependencies on Linux? Explained | Open Hardware/Modding: Raspberry Pi, Arduino, and More
=> ↺ How to install SSL Let’s Encrypt using Lego?
SSL / TLS (Secure Socket Layer / Transport Layer Security) are cryptographic protocols designed to provide communications security over a computer network: web, email, instant messengers.
=> ↺ How to Install Spotify on Ubuntu 22.04 or Ubuntu 20.04
Spotify is a popular music streaming service that has taken the world by storm since its launch in 2006. With over 320 million active users across 178 countries, it has become one of the most widely used music platforms globally.
=> ↺ Getting started with iperf3 - Network Troubleshooting
iperf3 is a tool to measure the throughput between hosts in a network and can test TCP, UDP, and SCPT, whereby TCP is the default. iperf3 must be installed and active on two hosts in which one host acts as a server and the other one as a client. By default, you measure the upload from the client to the server, but you can test the download from the client with the -R flag.
=> ↺ Is your jail not getting an IPv6 address soon enough? Blame DAD.
Looking in the jail, it had IPv6 addresses. What gives?
=> ↺ Cleaning up metadata, and building with Dublin Core
But what schema to keep? After mulling whether to just use HTML metadata and call it a day, I decided to stick with the Dublin Core Metadata Initiative. As an archivist and aspirational librarian, their metadata cause has always spoken the most to me, and I still think they offer the most flexible and broadly useful schemas for all sorts of data, not least a personal blog. It also fits in well with existing HTML metadata tags, so there isn’t much more markup to write.
=> ↺ File Uploads for the Web (1): Uploading Files with HTML
To actually send the file to a server, we need to make an HTTP request, which means we need a form>. We’ll put the file input inside along with a button to submit the form. The input will also need a label to make it accessible for assistive technology, an id attribute to associate it with the label, and a name attribute in order to include its data along with the HTTP request.
=> ↺ ZFS on Linux and when you get stale NFSv3 mounts
There are at least three ways to move a ZFS fileserver from Ubuntu 18.04 to Ubuntu 22.04. I'll skip upgrading it in place because we don't have any experience with that; we upgrade machines by reinstalling them from scratch. That leaves two approaches for a ZFS server, which I will call a forklift upgrade and a migration. In a forklift upgrade, you build new system disks, then swap them in by exporting the ZFS pools, changing system disks, booting your new 22.04 system, and importing the pools back.
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