Skip to content

Instantly share code, notes, and snippets.

View richardhsu's full-sized avatar

Richard Hsu richardhsu

14 followers · 2 following
View GitHub Profile
@bishboria
bishboria / springer-free-maths-books.md
Last active November 28, 2025 17:29
Springer made a bunch of books available for free, these were the direct links
@tamoyal
tamoyal / gist:2ea1fcdf99c819b4e07d
Last active February 13, 2020 11:24
Upgrade Postgres 9.3 to 9.4 on Ubuntu
# Be sure to save your config files. Optional but I do:
sudo cp /etc/postgresql/9.3/main/postgresql.conf ~
sudo cp /etc/postgresql/9.3/main/pg_hba.conf ~
# Package repo (for apt-get)
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" >> /etc/apt/sources.list.d/postgresql.list'
# Also probably optional but I like to update sources and upgrade
sudo apt-get update
@dideler
dideler / upgrade-postgres-9.3-to-9.4.md
Last active November 23, 2025 10:07
Upgrading PostgreSQL from 9.3 to 9.4 when upgrading Ubuntu 14.04 to 14.10

TL;DR

Create a backup:

pg_dumpall > mybackup.sql

Perform the upgrade:

sudo pg_dropcluster 9.4 main --stop
@peternixey
peternixey / securing_rails_updates.md
Created March 5, 2012 13:10
How Homakov hacked GitHub and how to protect your application by Peter Nixey

##How Homakov hacked GitHub and the line of code that could have prevented it

Please note: THIS ARTICLE IS NOT WRITTEN BY THE GITHUB TEAM or in any way associated with them. It's simply hosted as a Gist because the markdown formatting is excellent and far clearer than anything I could manage on my personal Tumblr at peternixey.com.

If you'd like to follow me on twitter my handle is @peternixey

@maxim75
maxim75 / exif.html
Created May 19, 2011 06:03
Reading EXIF info from image with JavaScript
<!DOCTYPE html>
<html lang="en">
<head>
<title>h5</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.js"></script>
<script src="exif.js"></script>
<style>
#holder { border: 1px dashed #ccc; width: 100px; height: 100px; margin: 20px auto;}
#holder.hover { border: 1px dashed #333; }
#result .property { width: 100px; }