yetithefoot

JavaScript error logging services

• http://www.errorify.com/ - source maps
• http://errorception.com/ - translate error messages to English
• http://www.exceptionhub.com/
• http://jserrlog.appspot.com/
• http://www.muscula.com/ - source maps, translate error messages to English
• https://www.airbrake.io/ - tracekit, source maps
• http://www.errorstack.com/

yetithefoot

To enable window.gc() on Chrome browser console you just need to start Chrome like this:

> /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --js-flags="--expose-gc" --enable-memory-info

Those flags enable the following console API, very usefull to debug memory leaks: 

> console.memory // print memory information
> window.gc() // force garbage collection

yetithefoot

Prereq:

apt-get install zsh
apt-get install git-core

Getting zsh to work in ubuntu is weird, since sh does not understand the source command. So, you do this to install zsh

wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | zsh

yetithefoot

# memory and map uses to limit memory on slall instances
convert -limit memory 32 -limit map 64 input.tif -units PixelsPerInch -density 72 -quality 80 -resize 1024 output.jpg

yetithefoot

sudo apt-get update
sudo apt-get install build-essential checkinstall libx11-dev libxext-dev zlib1g-dev libpng12-dev libjpeg-dev libfreetype6-dev libxml2-dev
sudo apt-get install imagemagick

wget http://www.imagemagick.org/download/ImageMagick.tar.gz
tar -xzvf ImageMagick.tar.gz
cd ImageMagick-6.8.9-9
./configure
make
sudo make install

yetithefoot

var query = { user: ObjectId("54ef43552e90860000000001"), trashed: { $ne: true } }; 

function map(){
        if(this.tags && this.tags.length) {
            var emits = []; // store all future emits. we will unique it later
            for(var i=0; i<this.tags.length;i++){
                
                var tag = this.tags[i];
                var path = tag.path;
                while(path.length){

yetithefoot

```identify -verbose file.jpg | grep Interlace```
///If you get back Interlace: JPEG then it’s progressive. It you get back Interlace: None then it’s a baseline (i.e. non-progressive JPEG).

yetithefoot

// This script will boot app.js with the number of workers
// specified in WORKER_COUNT.
//
// The master will respond to SIGHUP, which will trigger
// restarting all the workers and reloading the app.

var cluster = require('cluster');
var workerCount = process.env.WORKER_COUNT || 2;

// Defines what each worker needs to run

yetithefoot

Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

yetithefoot

function get_avatar_from_service(service, userid, size) {
    // this return the url that redirects to the according user image/avatar/profile picture
    // implemented services: google profiles, facebook, gravatar, twitter, tumblr, default fallback
    // for google   use get_avatar_from_service('google', profile-name or user-id , size-in-px )
    // for facebook use get_avatar_from_service('facebook', vanity url or user-id , size-in-px or size-as-word )
    // for gravatar use get_avatar_from_service('gravatar', md5 hash email@adress, size-in-px )
    // for twitter  use get_avatar_from_service('twitter', username, size-in-px or size-as-word )
    // for tumblr   use get_avatar_from_service('tumblr', blog-url, size-in-px )
    // everything else will go to the fallback
    // google and gravatar scale the avatar to any site, others will guided to the next best version