William Javier Trigos Guevara wkrea

Installing Node.js with `nvm` to Linux & macOS & WSL

A quick guide on how to setup Node.js development environment.

Install `nvm` for managing Node.js versions

nvm allows installing several versions of Node.js to the same system. Sometimes applications require a certain versions of Node.js to work. Having the flexibility of using specific versions can help.

Open new Terminal window.

Installing .NET Core on Linux ARM64

The following intructions can be used to install .NET Core on Linux ARM64.

Pro tip: Check out .NET Core Docker files to determine the exact instructions for installing .NET Core builds, for example .NET Core 3.1 ARM32 SDK Dockerfile.

Installing .NET Core Globally

The following instructions install the latest .NET Core globally. It isn't required to do that, but it provides the best experience.

Mixed Markdown and Shell Scripting

: By the power of this magic string: ex: set ft=markdown ;:<<'```shell' #, this file is now both a markdown document and an executable shell script. chmod +x it and try running it!

The above line does just what it says. More specifically, when placed within in the first 5 lines and preceded only by blank lines or #-prefixed markdown headers:

The first part of the magic string makes github and various editors (e.g. atom with the vim-modeline packge) treat the file as having markdown syntax (even if the file doesn't have an extension)
The second part (if run in a shell), makes the shell skip execution until it encounters the next ```shell block.

(The line also has to start with a : so that it's valid shell code.)

OpenMP

Open Multi-Processing es la API (biblioteca que define solo la interfaz) que aporta paralelismo multihilo en sistemas de memoria compartida en C/C++.

OpenMP se basa en el modelo fork-join, paradigma que proviene de los sistemas Unix, donde una tarea muy pesada se divide en X hilos (fork) con menor peso, para luego "recolectar" sus resultados al final y unirlos en un solo resultado (join).

La sintaxis básica disponible para informar al compilador dónde optimizar código es la directiva de OpenMP:

Windows Containers notes

Published ports from Windows Containers aren't accessible on the container host (they are remotely). Use Container IP locally:
- docker inspect --format '{{ .NetworkSettings.Networks.nat.IPAddress }}' <container>
- Docs explaining this
- GH Issue tracking fixes
  - host's IP on host does work now in Creator's Update: "as well as having direct access to the container using the Host IP and exposed port." - https://blogs.technet.microsoft.com/virtualization/2017/04/13/whats-new-in-hyper-v-for-the-windows-10-creators-update/
  - localhost on host doesn't work yet
Troubleshooting & Logs - Docker docs: https://docs.docker.com/docker-for-windows/troubleshoot/#docker-knowledge-hub

Kubernetes

Install

Prerequisites

Bash v5+ checkout Upgrading Bash on macOS
bash-completion@2

Install Docker and Kubernetes(k8s)

A collection of links to useful cheat sheets.

Only what's properly printable can get in. It should also be small enough to fit on a few pages.

Pleae contribute any you remember you've seen and liked. It would be wonderful if we can get these to be something more commonly made.

Search Engines

https://www.alienvault.com/blog-content/GoogleHackingCheatSheet.pdf (nicely put together!)

Intermediate Python for Finance Training

This is the Gist for the Intermediate Python for Finance Training in London, 28.-29. November 2017.

Notebooks & Code Files

Additional files (eg Jupyter Notebooks) are found under:

	#include <stdio.h>
	#include <stdlib.h>
	#include <omp.h>

	#define PARENT_TID 0

	int main() {
	int tid;
	#pragma omp parallel
	{

	# Reproducible Research using Docker and R

	# Challenges of reproducibility

	- dependencies
	- isolation and transparency
	- portability of computationational environment
	- extendability and resuse
	- ease of use