Alexander RANUX

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Location: https://github.com/wsargent/docker-cheat-sheet

Hi there!

The docker cheat sheet has moved to a Github project under https://github.com/wsargent/docker-cheat-sheet.

Please click on the link above to go to the cheat sheet.

Introduction

C-a == Ctrl-a
M-a == Alt-a

General

:q        close
:w        write/saves
:wa[!]    write/save all windows [force]
:wq       write/save and close

Learning MongoDB

Author: Lin Dong

Date: Sun Mar 8 13:36:08 PDT 2015

Lets talk about Mongo, src code

1

Intro

From Meteor's documentation:

In Meteor, your server code runs in a single thread per request, not in the asynchronous callback style typical of Node. We find the linear execution model a better fit for the typical server code in a Meteor application.

This guide serves as a mini-tour of tools, trix and patterns that can be used to run async code in Meteor.

Basic async

Sometimes we need to run async code in Meteor.methods. For this we create a Future to block until the async code has finished. This pattern can be seen all over Meteor's own codebase:

The MBP is my development machine, so I needed all of my tools installed with the ability to update them with ease. In the past, I used MacPorts to take care of my MySQL, Memcached, and Ruby installions and it worked just fine. This time around however, I wanted something new and fun. Homebrew.

Homebrew is a new package manager for OS X. Unlike Fink or MacPorts, Homebrew integrates with the core operating system, reducing the number of extra libraries to install etc. Another neat feature is the ability to write software package recipes in Ruby, awesome.

Here are some raw installation instructions (clean system). I like to keep everything under user ownership to make life more enjoyable, say no to sudo.

You will need the latest version of xcode, you can get it here. After the installation is complete, you may continue.

sudo mkdir /usr/local

after install neovim nvim config file folder ~/.config/nvim

git clone https://github.com/VundleVim/Vundle.vim.git ~/.config/nvim/bundle/Vundle.vim
ln -s ~/.vimrc ~/.config/nvim/init.vim
vim ~/.vimrc

set nocompatible              " be iMproved, required

filetype off " required

	Bash Keyboard Shortcuts

	Moving the cursor:

	Ctrl + a Go to the beginning of the line (Home)
	Ctrl + e Go to the End of the line (End)
	Ctrl + p Previous command (Up arrow)
	Ctrl + n Next command (Down arrow)
	Alt + b Back (left) one word
	Alt + f Forward (right) one word

	# basic pfctl control
	# ==
	# Related: http://www.OpenBSD.org
	# Last update: Tue Dec 28, 2004
	# ==
	# Note:
	# this document is only provided as a basic overview
	# for some common pfctl commands and is by no means
	# a replacement for the pfctl and pf manual pages.

	/**
	* Translucent borders
	*/

	body {
	background: url('http://csssecrets.io/images/stone-art.jpg');
	}

	div {
	border: 10px solid hsla(0,0%,100%,.5);

	That’s one of the real strengths of Docker: the ability to go back to a previous commit. The secret is simply to docker tag the image you want.

	Here’s an example. In this example, I first installed ping, then committed, then installed curl, and committed that. Then I rolled back the image to contain only ping:

	$ docker history imagename
	IMAGE CREATED CREATED BY SIZE
	f770fc671f11 12 seconds ago apt-get install -y curl 21.3 MB
	28445c70c2b3 39 seconds ago apt-get install ping 11.57 MB
	8dbd9e392a96 7 months ago 131.5 MB