bosunolanrewaju

After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install [email protected]
brew unlink [email protected]
brew link postgresql

bosunolanrewaju

#!bin/sh

# Update installed packages and package cache
sudo yum update -y

# make sure in the home folder
cd ~/

# Golang installation

bosunolanrewaju

MySQL

Getting started:

• http://www.sqlteaching.com/
• https://www.codecademy.com/courses/learn-sql

Related tutorials:

• MySQL-CLI
• Analyzing Business Metrics

bosunolanrewaju

The Problem

Standard practices say no non-root process gets to talk to the Internet on a port less than 1024. How, then, could I get Node talking on port 80 on EC2? (I wanted it to go as fast as possible and use the smallest possible share of my teeny tiny little micro-instance's resources, so proxying through nginx or Apache seemed suboptimal.)

The temptingly easy but ultimately wrong solution:

Alter the port the script talks to from 8000 to 80:

}).listen(80);

bosunolanrewaju

This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important:

bosunolanrewaju

<?php
require_once dirname(__FILE__) . '/../lib/simpletest/autorun.php';

// Retries $f (A function) with arguments ($args as array)
// 3 ($retries) times after 10 secs $delay
// Usage: 
//   retry( 'function_name', array('arg1', 'arg2'), 15, 5 );
//   #=> Retries function_name 5 times with arg1 and $arg2 as arguments at interval of 15 secs 
function retry($f, $args = null, $delay = 10, $retries = 3)
{

bosunolanrewaju

ALPHABET_SIZE = 26

def caesar_cipher(string)
  shiftyArray = []
  charLine = string.chars.map(&:ord)

  shift = 1
  ALPHABET_SIZE.times do |shift|
    shiftyArray << charLine.map do |c|
      ((c + shift) < 123 ? (c + shift) : (c + shift) - 26).chr

bosunolanrewaju

<?php
    global $post;
    $author_id=$post->post_author;
?>
     
<?php
/* You can also use one of these instead:
  - nickname
  - user_nicename
  - display_name