datt

#!/bin/bash -x
export PGPASSWORD=myPGPassword
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

#Script Begin
DATE=`date +%d_%m_%Y_%H_%M`
if ! /usr/bin/pg_dump -O -U postgres -h localhost project_production -f /root/backups/postgres/daily/project_production_pg_$DATE.sql; then
  /bin/echo "#########################################################" >> /var/log/postgres_backup.log
  /bin/echo "Postgres Backup backup failed on `date +%d-%m-%Y`" >> /var/log/postgresql_backup.log

datt

# Install the MySQL gem:
# gem install mysql2

default: &default
  adapter: mysql2
  encoding: utf8mb4
  reconnect: false
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  username: root
  password:

datt

sudo apt-get install git
sudo apt-get install nginx
sudo apt-get install nodejs
sudo apt-get install imagemagick 
sudo apt-get install libpq-dev #postgres ext lib required
sudo apt update
sudo apt-get install libmagick++-dev #imagemagick dependency

# Installing Ruby using .rbenv
sudo apt install git curl autoconf bison build-essential \

datt

class TicTacToeBoard
    SYMBOLS = ['X', 'Y']
    WINNING = [
        [0,1,2], [3,4,5], [6,7,8],
        [0,3,6], [1,4,7], [2,5,8],
        [0,4,8], [2,4,6]
    ]
    def initialize()
        @board = [['','',''], ['','',''], ['','','']]
    end

datt

# Rough Algo
# 1. Initialize last_distinct with first character
# 2. Iterate character by character
  # 3. if no repeating char, Push current character in last_distinct
  # 4. Repeat 3 until repeating char found
# 5  if repeating char found
  # 6  if repeating char at first place, drop and rotate
  # 7. if repeating char not at first place, reset with char and set longest.

class LongestDistinctSubstring # Finds length of the longest substring

datt

require 'active_support'
module CRUDActions
  extend ActiveSupport::Concern
  
  included do
    before_action :set_resource, only: [:show, :update, :destroy]
    after_action :set_response_headers, only: [:index]
  end
  
  # Returns count of records matching the scope

datt

How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

There are two main modes to run the Let's Encrypt client (called Certbot):

• Standalone: replaces the webserver to respond to ACME challenges
• Webroot: needs your webserver to serve challenges from a known folder.

Webroot is better because it doesn't need to replace Nginx (to bind to port 80).

In the following, we're setting up mydomain.com. HTML is served from /var/www/mydomain, and challenges are served from /var/www/letsencrypt.

datt

#
# File: /etc/logrotate.d/rails
# Test: logrotate -f /etc/logrotate.d/rails
#
/var/www/*/log/*.log {
  daily
  dateext
  notifempty
  missingok
  rotate 30

datt

Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

datt

#resetting the password of postgresql
sudo -u postgres psql postgres
postgres=# \password postgres

# restoring postgres dump database
pg_restore -c -i -U postgres -h localhost -d database_name -v "dump_file" -W
pg_restore --verbose --host localhost --username postgres --clean --no-owner --no-acl --dbname database_name dump_file.dump
# for mac: full path is required.
Applications/Postgres.app/Contents/Versions/9.4/bin/pg_restore -c -i -U postgres -h localhost -d database_name -v "dump_file" -W