Emre DevOps-Emre

AWS CLI Cheatsheet

http://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html https://www.youtube.com/watch?v=_wiGpBQGCjU

Setup

Redirect: Temporary and Permanent

What is an HTTP Redirect?

HTTP redirection, or URL redirection, is a technique of pointing one domain or address to another. There are many uses for redirection, and a few different kinds of redirection to consider.

As you create content and administrate servers, you will often find the need to redirect traffic from one place to another. This guide will discuss the different use-cases for these techniques, and how to accomplish them in Apache and Nginx.

Linux fun-o-matic

How to have some fun using the terminal.

Install cowsay [0] via : sudo apt-get install cowsay
Install fortune [1] via : sudo apt-get install fortune
Install figlet [3] via : sudo apt-get install figlet
Make sure you have Ruby installed via : ruby -v
Install the lolcat [2] via : gem gem install lolcat
(option) Add to .bash_profile and/or .bashrc

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)

	readinessProbe:
	exec:
	command: ["/root/grpc_health_probe", "-addr=:6666"]
	initialDelaySeconds: 1
	livenessProbe:
	exec:
	command: ["/root/grpc_health_probe", "-addr=:6666"]
	initialDelaySeconds: 2
	imagePullPolicy: IfNotPresent

	#!/bin/bash
	c=2
	a=1
	b=1
	d=0
	echo "enter the number of elements"
	read n
	echo "$a"
	echo "$b"
	while((c<n))

	#!/bin/bash
	c=2
	a=1
	b=1
	d=0
	echo "enter the number of elements"
	read n
	echo "$a"
	echo "$b"
	while((c<n))

	#!/usr/bin/env python
	# -- coding: utf-8 --

	#
	# Test that I passed on codility.com for TopTal company
	#


	# Task #1
	def binary_gap(N):

	# Terminal Cheat Sheet

	pwd # print working directory
	ls # list files in directory
	cd # change directory
	~ # home directory
	.. # up one directory
	- # previous working directory
	help # get help
	-h # get help