Jun 03, 2016

How Do I __________ in Git

This is a compilation of common questions about git that I’ve seen online or have encountered myself. This is a work in progress, so organization isn’t that great.

For all of these, it’s a very good idea to read the man pages before running them to ensure it will do exactly what you need done.

Undo a merge

git reset --hard ORIG_HEAD

Explanation: git reset will reset the HEAD to the specified commit, which in this case is ORIG_HEAD. This will be a reference to the commit right before the merge since git merge saves the old ...

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Jan 12, 2016

Bring IPv6 Tunnel Up On Network Connection

This post is aimed at setting up a Hurricane Electric IPv6 tunnel on Ubuntu, but it should be adaptable to other Linux distributions as long as they’re using Network Manager.

Firstly, you need to install the necessary packages: curl and optionally wireless-tools. The latter provides the iwgetid utility, but I’ll mention an alternative in the scripts below.

Assuming you’ve already set up a tunnel on tunnelbroker.net, you should get some details from the ‘Tunnel Details’ page:

  • ENDPOINT is listed as ‘Server IPv4 Address’.
  • ADDRESS is the ‘Client IPv6 Address’
  • GATEWAY is the ‘Server IPv6 Address’
  • TUNNELID ...
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Dec 18, 2015

Encrypt your UDF-formatted drive using LUKS

This article walks you through encrypting a USB flash drive using LUKS and then installing UDF on it. If you only want to use UDF without encryption, read my article on that: Using UDF on Your USB Flash Drive

Assumptions

  • you don’t want a partition table on your drive; you want the entire thing to be just the filesystem
  • your drive is /dev/sdb
  • you use Ubuntu (I ran this on 14.04, but it should be fine on later versions, too)

Steps

  1. Firstly, take all your data off your drive since encrypting it will wipe it.

  2. (Optional) Wipe ...

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Sep 06, 2015

A tiny service for checking if your app is online

Sometimes your app needs to check if it has access to the wider internet, as opposed to some WiFi network that’s redirecting all requests to a sign-in page. There are a few ways of doing this, but this article isn’t about that. This article is about a new tiny service I just launched called “Am I Online?”.

I never really needed this feature myself, but I wanted to try out Heroku and decided this is a perfect way of doing it. The entire application is 9 lines of Python code (using Flask), and about 30 lines of HTML ...

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Apr 27, 2015

A minimal Pomodoro-style timer

Yesterday I decided to make a very minimal Pomodoro-style timer to keep me on track. It doesn’t offer too many features; it just gives you options for the lengths of time, and 3 buttons to control the timer. If you want to reset the timer, just refresh the page.

It’s available here: https://80x24.ca/timer

screenshot

When I said this was very minimal, I didn’t mean just the interface; the code is very minimal too. There are no dependencies; all necessary code is within the one timer.html file. Just put it on a flash drive and ...

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