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    Convert webm to mp4

    There's an upcoming Mozilla trip to Hawaii on the cards and, in trying to be a good family man, I'm bringing my wife and two young sons.  Glutton for punishment?  Probably.  Anyways, I've been feverishly downloading cartoons from YouTube using youtube-dl to put onto our new iPad to keep...

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    Update jQuery UI Widget Options

    We're all used to passing options when instantiating an object, whether it be JavaScript or any other language.  Whether or not you can update those options later is usually up to the framework, and somehow many wont let you update them once they've been passed in.  Depending...

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    Require Parameters for JavaScript Functions

    JavaScript is notorious for being "loose", something that some developers love but other developers loathe.  I hear most of those complaints from server side developers, who want string typing and syntax.  While I like strict coding standards, I also like that JavaScript lets me quickly prototype without having...

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    Node.js Raw Mode with Keystrokes

    I find the stuff that people are doing with Node.js incredibly interesting.  You here about people using Node.js to control drones, Arduinos, and a host of other devices.  I took advantage of Node.js to create a Roku Remote, a project that was fun and easier than I thought...

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    Override Default Properties with JavaScript

    Unit testing with client side JavaScript is something you don't do until you're made to.  Of course unit testing is important but let's be honest:  most people are just happy that their code works, right?  Anyways, fast forward to a world where unit testing is normal and we have...

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    List Files in Human Readable Format

    I maintain an older computer with a small hard drive.  I use it mostly for storing MP3s, videos, and other types of basic media.  Unfortunately I often get warnings that disk space is low and so I need to delete files I no longer need; i.e. music or movies...

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    Runs Previous Command with Replace

    For some reason most of my typos happen within iTerm, which is kind of funny when you consider most commands are super short.  gut push doesn't do what I want, nor does hg ammend or any other command spelled wrong.  Then you have to either retype the whole...

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    Recursive Find from Command Line

    Probably a dozen times a day I need to search any given project for specific code keywords.  Most of the time it's within a specific project but then there are times where I don't remember which directory or project the specific text is -- from my blog to my many...

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    ‘openssl/opensslv.h’ file not found

    Every system update is an adventure when you're a software engineer.  We do everything we can to use virtual machines so that we have (almost) complete control of the environment but sometimes you simply need to work on your host system.  Everything goes great until you update your...

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    Get WiFi Password from Command Line

    I met Guillermo Rauch several years ago in the #mootools-dev room on IRC.  He jumped into the MooTools project and made great things happen; he also coded MooTools' plugins forge.  Since then he's gone on to create amazing things, most recently releasing HyperTerm, an excellent terminal app...