Skip to content

Instantly share code, notes, and snippets.

View apas's full-sized avatar

apas apas

View GitHub Profile
@phortuin
phortuin / postgres.md
Last active April 30, 2024 02:26
Set up postgres + database on MacOS (M1)

Based on this blogpost.

Install with Homebrew:

$ brew install postgresql@14

(The version number 14 needs to be explicitly stated. The @ mark designates a version number is specified. If you need an older version of postgres, use postgresql@13, for example.)

@lizthegrey
lizthegrey / attributes.rb
Last active February 24, 2024 14:11
Hardening SSH with 2fa
default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'
@nadavrot
nadavrot / Matrix.md
Last active May 15, 2024 11:20
Efficient matrix multiplication

High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).

Intro

Matrix multiplication is a mathematical operation that defines the product of

Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@christopheranderton
christopheranderton / update-outdated-brew-casks.sh
Last active February 4, 2024 17:29
Upgrade outdated brew casks. One liner, and the ”official” way to do it without using different hacks or scripts. However, it does not really replace some scripts out there, as in-app updates is not seen by Homebrew.
# Upgrade / Update outdated casks installed.
# --------------------------------------------------------------------------------
# Looks for outdated casks and installs the the latest version.
# User data (like application preferences) is intact.
# Updated one liner (thanks Henrik242)
# --------------------------------------------------------------------------------
brew upgrade $(brew outdated --cask --greedy --quiet)
@algesten
algesten / start-tmux.sh
Created May 14, 2017 07:59
start tmux in bashrc
# TMUX
# test if tmux is available
if type tmux >/dev/null 2>&1; then
# if not inside a tmux session, and if no session is started, start a new session
# I only want this on my mac laptop.
if [ -z "$TMUX" -a `uname` == Darwin ]; then
# attach to session "martin" if there
exec tmux -2 -f ~/.tmux-osx.conf new-session -A -s martin
fi
fi
@max-mapper
max-mapper / bibtex.png
Last active March 10, 2024 21:53
How to make a scientific looking PDF from markdown (with bibliography)
bibtex.png
@blainerothrock
blainerothrock / gen.swift
Last active July 12, 2018 15:56
A Very Simple Genetic Algorithm Written in Swift 3
#!/usr/bin/env xcrun swift -O
/*
gen.swift is a direct port of cfdrake's helloevolve.py from Python 2.7 to Swift 3
-------------------- https://gist.github.com/cfdrake/973505 ---------------------
gen.swift implements a genetic algorithm that starts with a base
population of randomly generated strings, iterates over a certain number of
generations while implementing 'natural selection', and prints out the most fit
string.
The parameters of the simulation can be changed by modifying one of the many
@mcnees
mcnees / graph paper.tex
Last active February 16, 2024 08:34
Make your own quadrille, graph, hex, etc paper! Uses the pgf/TikZ package for LaTeX, which should be part of any modern TeX installation.
%%-----------------------------------------------------------------------
%% Make your own quadrille, graph, hex, etc paper!
%% Uses the pgf/TikZ package for LaTeX, which should be part of
%% any modern TeX installation.
%% Email: mcnees@gmail.com
%% Twitter: @mcnees
%%-----------------------------------------------------------------------
\documentclass[11pt]{article}
@edsu
edsu / replies.py
Last active December 7, 2022 18:59
Try to get replies to a particular set of tweets, recursively.
#!/usr/bin/env python
"""
Twitter's API doesn't allow you to get replies to a particular tweet. Strange
but true. But you can use Twitter's Search API to search for tweets that are
directed at a particular user, and then search through the results to see if
any are replies to a given tweet. You probably are also interested in the
replies to any replies as well, so the process is recursive. The big caveat
here is that the search API only returns results for the last 7 days. So