Skip to content

Instantly share code, notes, and snippets.


Hengki Sihombing hengkiardo

  • Jakarta, Indonesia
View GitHub Profile
View gist:0136c8c36a868063902f
### Definitions:
1. A .csr file is a certificate signing request which initiates your certificate request with a certificate provider and contains administrative information about your organization.
2. A .key file is the private key used to encrypt your site’s SSL-enabled requests.
3. .pem and .crt extensions are often used interchangeably and are both base64 ASCII encoded files. The technical difference is that .pem files contain both the certificate and key whereas a .crt file only contains the certificate. In reality this distinction is often ignored.
## Generate SSL Keys for Heroku:
$ openssl genrsa -des3 -out server.orig.key 2048
$ openssl rsa -in server.orig.key -out server.key
$ openssl req -new -key server.key -out server.csr // Used for request of cert generation
View dependencies.txt
hengkiardo /
Created Apr 29, 2014
changing timezone to Ubuntu
# Show current time
$ date
# current timezone
$ more /etc/timezone
# change timezone
$ echo "Asia/Jakata" > /etc/timezone
$ dpkg-reconfigure -f noninteractive tzdata
hengkiardo / convert-a-number-as-string.js
Created Apr 24, 2014
How to format a number to string
View convert-a-number-as-string.js
function nFormatter(num) {
if (num >= 1000000000) {
return (num / 1000000000).toFixed(2).replace(/\.0$/, '') + 'G';
if (num >= 1000000) {
return (num / 1000000).toFixed(2).replace(/\.0$/, '') + 'M';
if (num >= 1000) {
return (num / 1000).toFixed(2).replace(/\.0$/, '') + 'K';
View migration.js
var async = require('async');
var ProgressBar = require('progress');
var monk = require('monk');
var ObjectId=require('mongodb').ObjectID;
var dest = monk('localhost:27017/storify_localhost');
var backup = monk('localhost:27017/storify_backup');
var userId = ObjectId(YOUR-OBJECT-ID); // monk should have auto casting but we need it for queries
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl | sh
View app.js
var express = require('express'),
passport = require('passport'),
LocalStrategy = require('passport-local').Strategy,
connect = require('connect'),
http = require('http'),
path = require('path'),
util = require('util'),
fs = require('fs'),
redis = require('redis'),
cookie = require('cookie'),
View ip.js
// snippet taken from
function getClientIp(req) {
var ipAddress;
// The request may be forwarded from local web server.
var forwardedIpsStr = req.header('x-forwarded-for');
if (forwardedIpsStr) {
// 'x-forwarded-for' header may return multiple IP addresses in
// the format: "client IP, proxy 1 IP, proxy 2 IP" so take the
// the first one
var forwardedIps = forwardedIpsStr.split(',');
View Gruntfile.js
'use strict';
var lrSnippet = require('grunt-contrib-livereload/lib/utils').livereloadSnippet;
var mountFolder = function (connect, dir) {
return connect.static(require('path').resolve(dir));
// # Globbing
// for performance reasons we're only matching one level down:
// 'test/spec/{,*/}*.js'
// use this if you want to match all subfolders:
hengkiardo / gist:9129379
Created Feb 21, 2014
How to prefetch video/audio files for uninterrupted playback in HTML5 video/audio
View gist:9129379
function e(id) {
return document.getElementById(id);
function loaded(blob_uri) {
// Clear progress indicator.
var container = e("container");
container.innerHTML = "";
var v = document.createElement("video");
v.src = blob_uri;