nrjdalal

Install QEMU on Silicon based Apple Macs (June 2021)

Option 1 - Automatically

zsh -c "$(curl -fsSL https://raw.githubusercontent.com/nrjdalal/silicon-virtualizer/master/install-qemu.sh)"

Option 2 - Manually

• Install Xcode command line tools

xcode-select --install

charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

sj26

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit

postpostscript

#!/bin/sh

command="${*}"
printf "Initialized REPL for `%s`\n" "$command"
printf "%s> " "$command"
read -r input
while [ "$input" != "" ];
do
    eval "$command $input"
    printf "%s> " "$command"

andreagrandi

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type test_struct struct {
	Test string

moertel

# Temporarily redirects STDOUT and STDERR to /dev/null
# but does print exceptions should there occur any.
# Call as:
#   suppress_output { puts 'never printed' }
#
def suppress_output
  original_stderr = $stderr.clone
  original_stdout = $stdout.clone
  $stderr.reopen(File.new('/dev/null', 'w'))
  $stdout.reopen(File.new('/dev/null', 'w'))

daytonn

# Colors
end="\033[0m"
black="\033[0;30m"
blackb="\033[1;30m"
white="\033[0;37m"
whiteb="\033[1;37m"
red="\033[0;31m"
redb="\033[1;31m"
green="\033[0;32m"
greenb="\033[1;32m"

carlwoodhouse

# copy from local machine to remote machine
scp localfile user@host:/path/to/whereyouwant/thefile

# copy from remote machine to local machine
scp user@host:/path/to/remotefile localfile

toddwschneider

library(maptools)
library(geosphere)

# load USA state-level spatial data
# download from http://gadm.org
# click the 'download' tab
# select county = 'united states', file format = 'R', click ok
# download 'level 1' for state-level data
load("USA_adm1.RData")

hmarr

RabbitMQ Basics

As demonstrated by the tutorials on the website, RabbitMQ can be used for everything from queuing background work to building RPC systems. To use RabbitMQ effectively, it is important to understand the core concepts: queues, exchanges, bindings, and messages. The documentation on rabbitmq.com is excellent, so I won't go into much depth, but it's worth briefly mentioning the core ideas.

Basic Terminology

Exchanges are where messages are sent. Every time a message is pushed in to RabbitMQ, it goes through an exchange.