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How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

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Get a 5.12 Linux kernel with support for newer Intel hardware (e.g., Intel Iris Xe for Thinkpad X1 Titanium Yoga) on Ubuntu/Debian/Pop!_OS

Prologue: Do I need this?

I recently got a Thinkpad sporting an Intel® Core™ i5-1140G7 Processor 11. gen (1,80 GHz, Turbo Boost, 4 Cores, 8 Threads, 8 MB Cache with an Integrated Intel® Iris® Xe. Sadly graphics drivers did not work out-of-the-box and also not with the latets 5.12 kernel from xenmod. You can tell it's not working when graphics are slow, backlight adjustment buttons don't work and this is the output of inxi -G (you might need to sudo apt install inxi):

simon@pop-os:~$ inxi -G
Graphics:
  Device-1: Intel driver: N/A 
  Device-2: IMC Networks Integrated Camera type: USB driver: uvcvideo 
  Display: x11 server: X.Org 1.20.9 driver: fbdev unloaded: modesetting,vesa 
 resolution: 2256x1504~95Hz 

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1. Downloading and building the Linux kernel

1. Clone the github repository onto your local machine.

$ git clone https://github.com/torvalds/linux.git
$ cd linux

2. Configure the build

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#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1

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git filter-branch --env-filter 'export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"'

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3 Virtual Machines Kubernetes cluster

Dependencies

You should install VirtualBox and Vagrant before you start.

Creating the cluster

You should create a Vagrantfile in an empty directory with the following content:

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I recently happened upon an implementation of popen() (different API, same idea) using clone(2), and so I opened an issue requesting use of vfork(2) or posix_spawn() for portability. It turns out that on Linux there's an important advantage to using clone(2). I think I should capture the things I wrote there in a better place. A gist, a blog, whatever.

So here goes.

Long ago, I, like many Unix fans, thought that fork(2) and the fork-exec process spawning model were the greatest thing, and the Windows sucked for only having [exec*()](http://pubs.opengroup.org/onlinepubs/9699919

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Stream details:

When using the TTY setting is enabled in POST, the stream is the raw data from the process PTY and client’s stdin. When the TTY is disabled, then the stream is multiplexed to separate stdout and stderr.

The format is a Header and a Payload (frame).

HEADER

The header contains the information which the stream writes (stdout or stderr). It also contains the size of the associated frame encoded in the last four bytes (uint32).

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EMOJI CHEAT SHEET

Emoji emoticons listed on this page are supported on Campfire, GitHub, Basecamp, Redbooth, Trac, Flowdock, Sprint.ly, Kandan, Textbox.io, Kippt, Redmine, JabbR, Trello, Hall, plug.dj, Qiita, Zendesk, Ruby China, Grove, Idobata, NodeBB Forums, Slack, Streamup, OrganisedMinds, Hackpad, Cryptbin, Kato, Reportedly, Cheerful Ghost, IRCCloud, Dashcube, MyVideoGameList, Subrosa, Sococo, Quip, And Bang, Bonusly, Discourse, Ello, and Twemoji Awesome. However some of the emoji codes are not super easy to remember, so here is a little cheat sheet. ✈ Got flash enabled? Click the emoji code and it will be copied to your clipboard.

People

😄

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

# This script helps removing Git branches.
# Run it from a git repo dir. It will open the Git branches list
# in your favorite editor. Delete some branches from the list.
# Save and close the file. The script applies the changes to the repo.

from subprocess import call, Popen, PIPE
from os import getenv