Swapnil Gourshete gourshete

## linux useful commands
1. Unistall package in ubuntu
sudo apt-get purge package_name

## remove dependencies as well
sudo apt-get purge --auto-remove package_name

## git commands
# git rename current branch
git branch -m <newname>

# change last commit message
git commit --amend

## hello.rb
def hello
  puts 'Hello world'
end

## expanded-routes.rb
# config/routes.rb

Rails.application.routes.draw do
  # resources :books becomes...
  get '/books' => 'books#index'
  get '/books/new' => 'books#new'
  post '/books' => 'books#create'
  get '/books/:id' => 'books#show'
  get '/books/:id/edit' => 'books#edit'
  put '/books/:id' => 'books#update'

## routes.rb
Rails.application.routes.draw do
  resources :books
end

## rack-config.ru
# This file is used by Rack-based servers to start the application.

require ::File.expand_path('../config/environment', __FILE__)
run Rails.application

## web_server_calls_rack_app.rb
env = {
  'REQUEST_METHOD' => 'GET',
  'PATH_INFO' => '/hello',
  'HTTP_HOST' => 'railsexamples.com',
  # ...
}

status, headers, body = app.call(env)

status  # => 200

## simple-nginx.conf
location /assets {
  alias /var/myapp/public/assets;
  gzip_static on;
  gzip on;
  add_header Cache-Control public;
}

## kubernetes_useful_commands.txt
### List all pods from all namespaces in current cluster
kubectl get pods --all-namespaces

### Get info about specific pod
kubectl describe pods --namespace pod-name pod-id

### SSH to a pod
kubectl exec -it -n insert_namespace_here -c web insert_pod_name_here -- bash

### Investigate CrashLoopBackOff state by finding previous container logs

## matrix-hacker.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
	  "http://www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
 <TITLE>Gone!!!</TITLE>
 <link rel="shortcut icon" HREF="/favicon.ico" TYPE="image/x-icon" />

 <META NAME="description"
    CONTENT="Swapnil Gourshete, tech enthu." />
	1. Unistall package in ubuntu
	sudo apt-get purge package_name

	## remove dependencies as well
	sudo apt-get purge --auto-remove package_name
	# git rename current branch
	git branch -m <newname>

	# change last commit message
	git commit --amend
	# config/routes.rb

	Rails.application.routes.draw do
	# resources :books becomes...
	get '/books' => 'books#index'
	get '/books/new' => 'books#new'
	post '/books' => 'books#create'
	get '/books/:id' => 'books#show'
	get '/books/:id/edit' => 'books#edit'
	put '/books/:id' => 'books#update'
	# This file is used by Rack-based servers to start the application.

	require ::File.expand_path('../config/environment', __FILE__)
	run Rails.application
	env = {
	'REQUEST_METHOD' => 'GET',
	'PATH_INFO' => '/hello',
	'HTTP_HOST' => 'railsexamples.com',
	# ...
	}

	status, headers, body = app.call(env)

	status # => 200
	location /assets {
	alias /var/myapp/public/assets;
	gzip_static on;
	gzip on;
	add_header Cache-Control public;
	}
	### List all pods from all namespaces in current cluster
	kubectl get pods --all-namespaces

	### Get info about specific pod
	kubectl describe pods --namespace pod-name pod-id

	### SSH to a pod
	kubectl exec -it -n insert_namespace_here -c web insert_pod_name_here -- bash

	### Investigate CrashLoopBackOff state by finding previous container logs

	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
	"http://www.w3.org/TR/html4/loose.dtd">
	<HTML>
	<HEAD>
	<TITLE>Gone!!!</TITLE>
	<link rel="shortcut icon" HREF="/favicon.ico" TYPE="image/x-icon" />

	<META NAME="description"
	CONTENT="Swapnil Gourshete, tech enthu." />