Akash Rajvanshi AkashRajvanshi

A bunch of good git tutorials

Intro to git

Simplest intro to git by github and codeschool - Try Git
PeepCode Git Internals PDF
[Intro to github]

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, Andrew Shafer did a talk called "Agile Infrastucture" addressing issues around involving more of the company in the same disciplines as programmers.

In 2009, Patrick Debois created "DevOpsDays" conference to help to bring it to light. However, it wouldn't begin to trend until about 2010, when people would begin to describe it as a standalone discipline.

Today, DevOps goes beyond just developers, systems administration and infrastructure, its about [dev, ops, agile, cloud

Typing vagrant from the command line will display a list of all available commands.

Be sure that you are in the same directory as the Vagrantfile when running these commands!

Creating a VM

vagrant init -- Initialize Vagrant with a Vagrantfile and ./.vagrant directory, using no specified base image. Before you can do vagrant up, you'll need to specify a base image in the Vagrantfile.
vagrant init <boxpath> -- Initialize Vagrant with a specific box. To find a box, go to the public Vagrant box catalog. When you find one you like, just replace it's name with boxpath. For example, vagrant init ubuntu/trusty64.

Starting a VM

vagrant up -- starts vagrant environment (also provisions only on the FIRST vagrant up)

Regular Expressions

Basic Syntax

/.../: Start and end regex delimiters
|: Alternation
(): Grouping

Calibre Server on Linux

Introduction

Calibre is a powerful cross-platform, open source, ebook manager and editing platform. Its calibre-server component can be used to publish an e-book library on a local network. While you can launch calibre-server as a desktop application, it can also be run as a daemon on a headless Linux server.

This tutorial on setting up calibre-server using Ubuntu 14.04 is very good, but dated.

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

MongoDB Cheat Sheet

Show All Databases

show dbs

	# 1. First of all of course get Manjaro:
	https://manjaro.org/get-manjaro/

	# I recommend using Etcher to copy the image to your USB:
	https://etcher.io/

	# 2. Before installing make sure:
	# - Secure boot is disabled in BIOS
	# - Your SSD, HDD or NVME drive is set to AHCI instead of RAID
	# - Fastboot should be on Auto or minimal, but this shouldn't matter to much

	# Example ssh config file. Usually located in ~/.ssh/config (user) or /etc/ssh/ssh_config (system)
	# This works on both linux and MacOS

	# Basic ssh commands converted to ssh/config file format



	# Simplest format
	# Run with: "ssh blog" => (equivalent to: "ssh [email protected]" and "ssh -i ~/.ssh/id_rsa -p 22 [email protected]")
	Host blog

	#!/bin/bash
	iatest=$(expr index "$-" i)

	#######################################################
	# SOURCED ALIAS'S AND SCRIPTS BY zachbrowne.me
	#######################################################

	# Source global definitions
	if [ -f /etc/bashrc ]; then
	. /etc/bashrc