beanieboi

daemon off;
# Heroku dynos have at least 4 cores.
worker_processes <%= ENV['NGINX_WORKERS'] || 4 %>;

events {
  use epoll;
  accept_mutex on;
  worker_connections 1024;
}

JoshCheek

Quiz time!

• What does the dot mean in in StringIO.new, what does the hash mean in StringIO#puts?
• How do you make a String literal?
• How do you make a String without using a literal?

This is an HTTP request, it is a String that is sent across a Socket, which your program can read from as if it were a file or $stdin.

01 POST /users/5?omg=wtf&bbq=lol HTTP/1.1\r\n

darron

#!/bin/bash

# You need: curl, jq, and ipcalc to run this.
# You should already have cut, sort and uniq if you're on OS X or Linux.

RANGES=$(curl -s https://ip-ranges.amazonaws.com/ip-ranges.json | jq .prefixes | jq '.[] | select(.region=="us-east-1")' | jq 'select(.service=="EC2")' | jq .ip_prefix | cut -d '"' -f 2 | sort | uniq)

for range in $RANGES
do
  MIN=$(ipcalc -bn $range | grep "HostMin" | cut -d ':' -f 2)

brianjlandau

require 'uri'

hostname = "(?:(?:[\\w\\-]+\\.)+[[:alpha:]]{2,})"
host = "(?:#{hostname}|#{URI::DEFAULT_PARSER.pattern[:IPV4ADDR]}|#{URI::DEFAULT_PARSER.pattern[:IPV6ADDR]})"
server = "//(?:#{URI::DEFAULT_PARSER.pattern[:USERINFO]}@)?#{host}(?::\\d*)?"
absolute_path = "(?:#{URI::DEFAULT_PARSER.pattern[:ABS_PATH]})?"
query = URI::DEFAULT_PARSER.pattern[:QUERY]

http_uri_regex = Regexp.new("\\A(?:http|https):(?:#{server}#{absolute_path})(?:\\?(?:#{query}))?\\z", Regexp::EXTENDED, 'N')

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






\

wolever

-- Functions to create and draw histograms with PostgreSQL.
--
-- psql# WITH email_lengths AS (
--    -#    SELECT length(email) AS length
--    -#    FROM auth_user
--    -#    LIMIT 100
--    -# )
--    -# SELECT * FROM show_histogram((SELECT histogram(length, 0, 32, 6) FROM email_lengths))
--  bucket |                range                | count |              bar               |             cumbar             | cumsum |         cumpct         
-- --------+-------------------------------------+-------+--------------------------------+--------------------------------+--------+------------------------

tobstarr

#!/bin/bash

aws cloudformation create-stack --stack-name test-vpc --template-body file://vpc.json

mjallday

curl https://api.balancedpayments.com/debits -XPOST -u ak-test-2yK59ihwoOOk0S6wsg77iMGzLGnGxiohB: -d "source[number]=4444444444444448" -d "source[expiration_month]=12" -d "source[expiration_year]=2016" -d amount=100

{
  "errors": [
    {
      "status": "Payment Required",
      "category_code": "card-declined",
      "additional": "Account Frozen",
      "status_code": 402,

dysinger

#!/bin/sh
# linux firewall/forwarding
modprobe iptable_nat
echo 1 | tee /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -s 10.10.10.1/2 -o eth0 -j MASQUERADE
# install openvpn
apt-get update && apt-get install -y openvpn
cd /etc/openvpn/
INSTANCE=$(curl http://169.254.169.254/latest/meta-data/public-hostname)
openvpn --genkey --secret ${INSTANCE}.key

croaky

---
rvm:
  - 2.0.0

before_install:
  - "echo 'gem: --no-document' > ~/.gemrc"
  - "echo '--colour' > ~/.rspec"
  - gem install fog
  - "./script/travis/bundle_install.sh"
  - export DISPLAY=:99.0