Littledata surveyed 5,985 sites in May 2022 and found the average server response time was 416ms.

Base45/Zlib/COSE/CBOR is CBOR format data signed in COSE format, compressed in Zlib format, and converted to Base45 format.

EUDCC (EU Digital COVID Certificate) is used as the data format for QR codes. EUDCC is the common format for the COVID-19 vaccination certificate in the EU, also known as DGC (EU Digital Green Certificate) or Green Pass.

DenCode supports decoding only, and the decoded result is expressed in JSON format. The validity of the signature is not verified.

Based on the public EU technical specifications, here is a simple decoder of the QR-code, it displays all the information in the Health Certificate QR-code with many technical explanations on the steps. A lot of the technique used by the EU Green Certificate are coming from the IETF. The code itself is heavily based on open source code.

In a podcast geared towards CTOs, Matthias Jugel, the CTO of UBIRCH shared what went into the technology and explained how to simply decode the content of the QR-Code.

This repository contains a proposal for encoding and signing the Electronic Health Certificate (HCERT), as a candidate to be adapted and adopted by eHealth authorities and other stakeholders as they see fit.

Commission Implementing Decision (EU) 2021/1073 of 28 June 2021 laying down technical specifications and rules for the implementation of the trust framework for the EU Digital COVID Certificate established by Regulation (EU) 2021/953 of the European Parliament and of the Council (Text with EEA relevance)

The Digital Green Certificate comes in to facilitate safe and free movement.

Commission Implementing Decision (EU) 2021/2301 of 21 December 2021 amending Implementing Decision (EU) 2021/1073 laying down technical specifications and rules for the implementation of the trust framework for the EU Digital COVID Certificate established by Regulation (EU) 2021/953 of the European Parliament and of the Council (Text with EEA relevance)

Commission Implementing Decision (EU) 2021/2014 of 17 November 2021 amending Implementing Decision (EU) 2021/1073 laying down technical specifications and rules for the implementation of the trust framework for the EU Digital COVID Certificate established by Regulation (EU) 2021/953 of the European Parliament and of the Council (Text with EEA relevance)

Commission Implementing Decision (EU) 2021/1073 of 28 June 2021 laying down technical specifications and rules for the implementation of the trust framework for the EU Digital COVID Certificate established by Regulation (EU) 2021/953 of the European Parliament and of the Council (Text with EEA relevance)

gron is a self-contained Go executable you can download from here on GitHub. In the UNIX tradition, gron does one thing well: it flattens JSON into a structure that's easily processed by shell tools, line by line.

Make JSON greppable!

gron transforms JSON into discrete assignments to make it easier to grep for what you want and see the absolute 'path' to it. It eases the exploration of APIs that return large blobs of JSON but have terrible documentation.

q -- a tiny command line DNS client with support for UDP, TCP, DoT, DoH, DoQ and ODoH.

Oh-heck is a CLI tool that takes natural language input and outputs a terminal command using GPT-3.

cheating is ok 😂 http://cheat.sh is one of my favorite utilities and easy to curl from the command line. Want to know about "ssh"? Just curl http://cheat.sh/ssh and get a little cheat sheet right to your terminal. Here's an example with "echo":

via John McBride
@johncodezzz

Port all important software (like Doom, Second Reality, X windows etc..) on AA-lib.
Port AA-lib on all available platforms (mainly ZX-Spectrum and Sharp).
Force IBM to start manufacturing MDA cards again. 

AA-project was started by Jan Hubicka. In that times just a few people knew about it. Then a new demo named BB has been relased to show the power of AA-lib technology. Now the project is freely available and anyone can help.

The Fuck is a magnificent app, inspired by a @liamosaur tweet, that corrects errors in previous console commands.

Is The Fuck too slow? Try the experimental instant mode!

Glow is a terminal based markdown reader designed from the ground up to bring out the beauty—and power—of the CLI.

Use it to discover markdown files, read documentation directly on the command line and stash markdown files to your own private collection so you can read them anywhere. Glow will find local markdown files in subdirectories or a local Git repository.

By the way, all data stashed is encrypted end-to-end: only you can decrypt it. More on that below.

Fig adds IDE-style autocomplete to your existing terminal. Move faster with Fig.

hexyl is a simple hex viewer for the terminal. It uses a colored output to distinguish different categories of bytes (NULL bytes, printable ASCII characters, ASCII whitespace characters, other ASCII characters and non-ASCII).