Abreto Fu Abreto

Adopted from here https://topaxi.codes/use-npm-without-root-or-sudo-rights/

I'm saving this as a gist and modifying it to ensure that if the original blog post disappears it lives on somewhere.

Added some notes for Ubuntu 18.04 and similar.

Today we're going to setup our npm installation to be used without root or sudo rights.

By default, if you install packages globally with npm, npm tries to install them into a system directory (i.e. /usr/local/lib/node_modules). With the next steps, we're going to use your home directory for those files.

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

Slurm Configuration Debian based Cluster

Here I will describe a simple configuration of the slurm management tool for launching jobs in a really simplistic cluster. I will assume the following configuration: a main node (for me it is an Arch Linux distribution) and 3 compute nodes (for me compute nodes are Debian VMs). I also assume there is ping access between the nodes and some sort of mechanism for you to know the IP of each node at all times (most basic should be a local NAT with static IPs)

Basic Structure

Slurm management tool work on a set of nodes, one of which is considered the master node, and has the slurmctld daemon running; all other compute nodes have the slurmd daemon. All communications are authenticated via the munge service and all nodes need to share the same authentication key. Slurm by default holds a journal of activities in a directory configured in the slurm.conf file, however a Database management system can be set. All in all what we will try to do is:

Install `munge

Commit Message Guidelines

Short (72 chars or less) summary

More detailed explanatory text. Wrap it to 72 characters. The blank
line separating the summary from the body is critical (unless you omit
the body entirely).

Write your commit message in the imperative: "Fix bug" and not "Fixed
bug" or "Fixes bug." This convention matches up with commit messages

	#!/usr/bin/env sh

	# certbot certonly --manual --preferred-challenges=dns-01 --server=https://acme-v02.api.letsencrypt.org/directory

	set -x

	new () {
	docker run --rm -it \
	-v "$(pwd)":/etc/letsencrypt \
	certbot/certbot \

	\documentclass[a4paper]{article}
	\input{./hoare.tex}

	\begin{document}
	\begin{hoare}
	\heq[a]{m * (a-b) > 0}{n := a-b}{m * n > 0}{\A}
	\heq[b]{1 * (a-b) > 0}{m := 1}{m * (a-b) > 0}{\A}
	\heq[c]{a > b}{m := 1}{m * (a-b) > 0}{\PrE(b)}
	\heq[d]{a > b}{m := 1; n := a-b}{m * n > 0}{\Seq(c, a)}
	\end{hoare}

	import os
	import logging

	LOGLEVEL = os.environ.get('LOGLEVEL', 'INFO').upper()
	logging.basicConfig(level=LOGLEVEL, format="%(asctime)s %(message)s")

	sudo apt update && \
	sudo apt install build-essential software-properties-common -y && \
	sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
	sudo apt update && \
	sudo apt install gcc-6 g++-6 -y && \
	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6 && \
	gcc -v

	#!/usr/bin/python
	from PIL import Image,ImageOps
	import struct
	import sys
	if len(sys.argv) < 3:
	print "Need two args: source_filename and result_filename\n";
	sys.exit(0)
	filename = sys.argv[1]
	result_filename = sys.argv[2]

	---
	- name: Create Instance in AWS
	hosts: localhost
	connection: local
	gather_facts: false

	vars:
	aws_access_key: "xxxxxx"
	aws_secret_key: "xxxxxx"
	security_token: "xxxxxx"