Bruno Furtado bcfurtado

Introduction

This is about documenting getting Linux running on the late 2016 and mid 2017 MPB's; the focus is mostly on the MacBookPro13,3 and MacBookPro14,3 (15inch models), but I try to make it relevant and provide information for MacBookPro13,1, MacBookPro13,2, MacBookPro14,1, and MacBookPro14,2 (13inch models) too. I'm currently using Fedora 27, but most the things should be valid for other recent distros even if the details differ. The kernel version is 4.14.x (after latest update).

The state of linux on the MBP (with particular focus on MacBookPro13,2) is also being tracked on https://github.com/Dunedan/mbp-2016-linux . And for Ubuntu users there are a couple tutorials (here and here) focused on that distro and the MacBook.

Note: For those who have followed these instructions ealier, and in particular for those who have had problems with the custom DSDT, modifying the DSDT is not necessary anymore - se

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

Emacs Survival Guide

Notation

C for Control key (also labeled as CTL or CTRL on keyboards)

M for Meta key (also labeled as EDIT, ALT or COMMAND on keyboards)

if your keyboard doesn't have this key, just press and release ESC for the same purpose.

C- means hold the Control key while typing the key chr.

How to deploy a Django app with PostgreSQL + Gunicorn + Nginx using pyenv on Ubuntu Server 16.04

This guide shows how to setup a production environment for a Django application using PostgreSQL as database, Gunicorn as application server and Nginx as http server using Ubuntu Server 14.04 as Operative System.

Install PosgreSQL, Nginx, Git and Circus

Install PostgreSQL and Nginx using:

sudo apt-get install -y postgresql-9.5 postgresql-contrib-9.5 postgresql-server-dev-9.5 nginx git circus make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils python-setuptools

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

git commit stats

Commands to get commit statistics for a Git repository from the command line -
using git log, git shortlog and friends.

	# based on https://gist.github.com/blueyed/4fb0a807104551f103e6
	# and on https://gist.github.com/TauPan/aec52e398d7288cb5a62895916182a9f (gistspection!)

	from django.core.management import call_command
	from django.db import connection
	from django.db.migrations.executor import MigrationExecutor

	import pytest

	sudo apt-get update
	sudo apt-get install build-essential chrpath libssl-dev libxft-dev -y
	sudo apt-get install libfreetype6 libfreetype6-dev -y
	sudo apt-get install libfontconfig1 libfontconfig1-dev -y
	cd ~
	export PHANTOM_JS="phantomjs-2.1.1-linux-x86_64"
	wget https://github.com/Medium/phantomjs/releases/download/v2.1.1/$PHANTOM_JS.tar.bz2
	sudo tar xvjf $PHANTOM_JS.tar.bz2
	sudo mv $PHANTOM_JS /usr/local/share
	sudo ln -sf /usr/local/share/$PHANTOM_JS/bin/phantomjs /usr/local/bin

	class PubSub {
	constructor() {
	this.handlers = [];
	}

	subscribe(event, handler, context) {
	if (typeof context === 'undefined') {
	context = handler;
	}

	'use strict';

	class NameCard extends HTMLElement {
	set name(val) {
	this._name = val;

	this.render();
	}
	get name() {
	return this._name;