zaydek-old

bash$ pg_ctl -D /usr/local/var/postgres start ## init postgres
bash$ psql -d postgres                        ## connect to postgres
psql# create database logger;                 -- create a database named "logger"
psql# begin;                                  -- start a transaction
psql# \i log.sql                              -- load database
psql# commit;                                 -- commit the transaction
bash$ go run log.go                           ## run driver program

excavador

Motivation

You often have several docker containers and applications which work together in the locel development environment. You need the following communications:

• docker container to localhost
• localhost to docker container
• docker container to docker container

You have a way to connect localhost-to-docker using -p (port-mapping) docker option. For instance, you can start PostgreSQL container using -p 0.0.0.0:5432:5432 and then connect like to normal PostgreSQL

File tree

# build result
/bin

# bootstrap result
/bin/gb
/bin/gb-vendor

# build result
/bin/BINARY_NAME

stympy

#!/usr/bin/env ruby

require 'sidekiq'
require 'sidekiq/cli'

# Default to running one process per core
def process_count
  return ENV['SK_PROCESS_COUNT'].to_i unless ENV['SK_PROCESS_COUNT'].to_i == 0

  case RbConfig::CONFIG['host_os']

toxatoor

# HTTP crawler inside nginx.
#
# start crawling by curl http://127.0.0.1:18080/?host=<START URL>
#

worker_processes  auto;

events {
    worker_connections  16384;
}

reedsa

#!/usr/bin/env python
# http://www.rabbitmq.com/tutorials/tutorial-two-python.html
import pika
import sys

connection = pika.BlockingConnection(pika.ConnectionParameters(
        host='localhost'))
channel = connection.channel()

message = ' '.join(sys.argv[1:]) or "Hello World!"

rtfpessoa

First verify the version of Java being used is not Sun Java 8 SDK

java -version

Check the latest version a build numbers in http://www.oracle.com/technetwork/java/javase/downloads/index.html

For url http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz, the variables should be defined as:

java_base_version="8"
java_sub_version="11"

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

willurd

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

phpdude

        location /resize {
                alias /tmp/nginx/resize;
                set $width 150;
                set $height 100;
                set $dimens "";

                if ($uri ~* "^/resize_(\d+)x(\d+)/(.*)" ) {
                        set $width  $1;
                        set $height $2;
                        set $image_path $3;