kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

peteryates

I'm getting adverts in my TV's UI, help!

Samsung's otherwise excellent 2016 range of UHD TVs received an update that added advertisements to the UI. This has been complained about at great length on Samsung's forums and repeatedly, Samsung have refused to add an option to remove them.

The ads interrupt the clean UI of the TV and are invasive. Here's an example of how they look:

This guide was originally posted on Samsung's TV forums but unfortunately, that site is a super-slow and barely accessible unusable mess.

aparrish

attacus

This guide is unmaintained and was created for a specific workshop in 2017. It remains as a legacy reference. Use at your own risk.

Running your own encrypted chat service with Matrix and Riot

Workshop Instructor:

• Lilly Ryan @attacus_au

This workshop is distributed under a CC BY-SA 4.0 license.

What are we doing here?

flibitijibibo

A week ago I was CC'd in on a thread about Linux packaging, and how to avoid doing it the wrong way (i.e. RPM, Deb, etc.). I've always used MojoSetup and I've never forced distributions to do any additional work, but this is still a new concept to a lot of people. Additionally, Amos suggested that I expand on Itch's FNA appendix, so here's a guide on how I package my games.

This is a bit of an expansion on my MAGFest 2016 presentation, which you can find here:

http://www.flibitijibibo.com/magfest2016/

https://www.youtube.com/watch?v=B83CWUh0Log

I would recommend looking at that first! After that, read on...

subfuzion

There are certain files created by particular editors, IDEs, operating systems, etc., that do not belong in a repository. But adding system-specific files to the repo's .gitignore is considered a poor practice. This file should only exclude files and directories that are a part of the package that should not be versioned (such as the node_modules directory) as well as files that are generated (and regenerated) as artifacts of a build process.

All other files should be in your own global gitignore file:

• Create a file called .gitignore in your home directory and add any filepath patterns you want to ignore.
• Tell git where your global gitignore file is.

Note: The specific name and path you choose aren't important as long as you configure git to find it, as shown below. You could substitute .config/git/ignore for .gitignore in your home directory, if you prefer.

dalegaspi

Installing Python 2.7 on Centos 6.5

Centos 6.* comes with Python 2.6, but we can't just replace it with v2.7 because it's used by the OS internally (apparently) so you will need to install v2.7 (or 3.x, for that matter) along with it. Fortunately, CentOS made this quite painless with their Software Collections Repository

sudo yum update # update yum
sudo yum install centos-release-scl # install SCL 
sudo yum install python27 # install Python 2.7

To use it, you essentially spawn another shell (or script) while enabling the newer version of Python:

jordan-brough

#!/usr/bin/env bash

# Source: https://gist.github.com/jordan-brough/48e2803c0ffa6dc2e0bd
# See also: https://stackoverflow.com/a/25095062/58876

# Download this script as "git-recent" (no extension), chmod it to be executable and put it in your
# path somewhere (e.g. /usr/bin). You can then use it via `git recent` from inside any git repo.

# Examples:

kevin-smets

Default

Powerlevel10k

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD