Skip to content

Instantly share code, notes, and snippets.

View ernsheong's full-sized avatar

Jonathan Lin ernsheong

View GitHub Profile
@thaJeztah
thaJeztah / docker-examples.md
Last active October 11, 2024 12:20
Some docker examples

Commit, clone a container

To 'clone' a container, you'll have to make an image of that container first, you can do so by "committing" the container. Docker will (by default) pause all processes running in the container during commit to preserve data-consistency.

For example;

docker commit --message="Snapshot of my container" my_container my_container_snapshot:yymmdd
// Restify Server CheatSheet.
// More about the API: http://mcavage.me/node-restify/#server-api
// Install restify with npm install restify
// 1.1. Creating a Server.
// http://mcavage.me/node-restify/#Creating-a-Server
var restify = require('restify');
@joshteng
joshteng / dokku_setup.md
Last active August 27, 2024 04:03
Using Dokku to deploy a Rails Application

#Goal Deploy your Rails App super easily with Dokku on Digital Ocean cheap cheap!

##Notes

  • Follow 12 factor design (include the rails_12factor gem)
  • Don't forget your Procfile with the command to start up your application server
  • I prefer using external hosted logging services like Logentries (not in this guide)
  • Set up performance monitoring AppSignal or New Relic (not in this guide)
package main
import (
"net/http"
"database/sql"
"fmt"
"log"
"os"
)
@staltz
staltz / introrx.md
Last active May 15, 2025 10:37
The introduction to Reactive Programming you've been missing
@codler
codler / flex.less
Last active October 7, 2023 07:01
Prefix flex for IE10 and Safari / iOS in LESS
/*! Prefix flex for IE10 and Safari / iOS in LESS
* https://gist.github.com/codler/2148ba4ff096a19f08ea
* Copyright (c) 2014 Han Lin Yap http://yap.nu; MIT license */
.display(@value) when (@value = flex) {
display: -ms-flexbox; // IE10
display: -webkit-flex; // Safari / iOS
}
.display(@value) when (@value = inline-flex) {
@soheilhy
soheilhy / nginxproxy.md
Last active May 14, 2025 20:17
How to proxy web apps using nginx?

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

@christiangenco
christiangenco / download website assets
Created January 20, 2014 23:23
Use wget to download a website's assets, including images, css, javascript, and html. From http://www.linuxjournal.com/content/downloading-entire-web-site-wget
$ wget \
--recursive \
--no-clobber \
--page-requisites \
--html-extension \
--convert-links \
--domains website.org \
--no-parent \
www.website.org/tutorials/html/
@danharper
danharper / background.js
Last active April 29, 2025 04:09
Bare minimum Chrome extension to inject a JS file into the given page when you click on the browser action icon. The script then inserts a new div into the DOM.
// this is the background code...
// listen for our browerAction to be clicked
chrome.browserAction.onClicked.addListener(function (tab) {
// for the current tab, inject the "inject.js" file & execute it
chrome.tabs.executeScript(tab.ib, {
file: 'inject.js'
});
});
@sindresorhus
sindresorhus / post-merge
Last active July 25, 2024 06:53
git hook to run a command after `git pull` if a specified file was changed.In this example it's used to run `npm install` if package.json changed and `bower install` if `bower.json` changed.Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.
#!/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com
# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.
changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
check_run() {
echo "$changed_files" | grep --quiet "$1" && eval "$2"