Rajkumar Singh cybernetics

Security Advisories / Bulletins / vendors Responses linked to Log4Shell (CVE-2021-44228)

Errors, typos, something to say ?

If you want to add a link, comment or send it to me
Feel free to report any mistake directly below in the comment or in DM on Twitter @SwitHak

Other great resources

Royce Williams list sorted by vendors responses Royce List
Very detailed list NCSC-NL
The list maintained by U.S. Cybersecurity and Infrastructure Security Agency: CISA List

Generalized Algebraic Data Types in Scala

Basic GADTs

Here's an ADT which is not a GADT, in Haskell:

data Expr = IntExpr Int | BoolExpr Bool

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

Getting Started With Kubernetes On A High Level

One of biggest barriers when trying to get started with Kubernetes is that there's so much content out there that it's kinda overwhelming - and that's totally normal! The intent of this document is to try and provide directed resources in a roadmap like fashion to understand and learn about the horizontals of Kubernetes - post which you can dive deep into any vertical while keeping the bigger picture in mind - that this document hopes to provide.

This is a set of resources for different topics that I found particularly helpful when getting started, and hopefully you do too! I've tried to list them out in order of consumption. If A comes before B under a subtopic, then it's probably that A has topics needed for B, or that A attempts to explain topics of B in a slightly simpler (not nescessarily better) manner than B.

Containers

Feel free to skip over if you're already familiar with containers and have some idea about what they are and why they exist.

Update

The first post has been published: https://www.swyx.io/writing/cloud-distros

The second post has been adapted for Temporal: https://www.swyx.io/why-temporal/

these are bullet points of a blogpost on a topic i know very little about but i feel like there is something there that is happening as we speak

	#!/bin/sh
	#
	# Use posixregex CLI tool from: https://github.com/syzdek/dmstools/blob/master/src/posixregex.c

	RE_IPV4="((25[0-5]\|(2[0-4]\|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]\|(2[0-4]\|1{0,1}[0-9]){0,1}[0-9])"

	posixregex -r "^(${RE_IPV4})$" \
	127.0.0.1 \
	10.0.0.1 \
	192.168.1.1 \

	@DslMarker
	annotation class JSBuilderDsl

	@DslMarker
	annotation class JSSetterDsl

	data class JSObj(val map: MutableMap<String, Any?> = linkedMapOf()) : MutableMap<String, Any?> by map {

	object Arr {
	@JSBuilderDsl

	@DslMarker
	annotation class JSBuilderDsl

	@DslMarker
	annotation class JSSetterDsl

	data class JSObj(val map: MutableMap<String, Any?> = mutableMapOf()) : MutableMap<String, Any?> by map {
	object Arr {
	@JSBuilderDsl
	operator fun get(vararg items: Any?) = items