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Install BBB script

wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -v xenial-200 -s bbb.got.edu.vn -e [email protected]

Setup BBB-HTML5

http://docs.bigbluebutton.org/html/html5-dev.html#setup-of-the-development-environment

Install Meteor, MongoDB and nodejs

http://docs.bigbluebutton.org/html/html5-install.html#1-install-mongdb-and-nodejs

The perfect Varnish configuration for Joomla, WordPress & other CMS based websites

IMPORTANT: Read this before implementing one of the configuration files below (for either Varnish 3.x or 4.x+).

USE: Replace the contents of the main Varnish configuration file located in /etc/varnish/default.vcl (root server access required - obviously) with the contents of the configuration you'll use (depending on your Varnish version) from the 2 examples provided below.

IMPORTANT: The following setup assumes a 3 minute (180 sec) cache time. You can safely increase this to 5 mins for less busier sites or drop it to 1 min or even 30s for high traffic sites.

This configuration requires an HTTP Header and a user cookie to identify if a user is logged in a site, in order to bypass caching overall (see how it's done in the Joomla section). If your CMS provides a way to add these 2 requirements, then you can use this configuration to speed up your site or entire server. You can even exclude the domains you don't want to cach

https://stackoverflow.com/questions/22717773/user-is-missing-the-overall-read-permission-error-with-jenkins-github-oauth-pl

Restart Jenkins

cd /var/lib/jenkins/
/etc/init.d/jenkins restart

Tabs and Windows

Function	Shortcut
New Tab	`⌘` + `T`
Close Tab or Window	`⌘` + `W` (same as many mac apps)
Go to Tab	`⌘` + `Number Key` (ie: `⌘2` is 2nd tab)
Go to Split Pane by Direction	`⌘` + `Option` + `Arrow Key`
Cycle iTerm Windows	`⌘` + `backtick` (true of all mac apps and works with desktops/mission control)

Top 16 docker commands

To remove all images which are not used by existing containers

docker image prune -a

List running containers.

docker ps

$.ajax({
    type: "POST",
    url: _url,
    xhrFields: {
        responseType: "blob" // to avoid binary data being mangled on charset conversion
    },
    success: function(blob, status, xhr) {
        // check for a filename
        var filename = "";

	# Optimized my.cnf configuration for MySQL/MariaSQL
	#
	# by Fotis Evangelou, developer of Engintron (engintron.com)
	#
	# === Updated December 2018 ===
	#
	# The settings provided below are a starting point for a 2GB - 4GB RAM server with 2-4 CPU cores.
	# If you have less or more resources available you should adjust accordingly to save CPU,
	# RAM and disk I/O usage.
	# The settings marked with a specific comment or the word "UPD" after the value

	#!/usr/bin/env bash
	#
	# Originally from https://gist.github.com/IanVaughan/2902499
	#
	# authors: Ian Vaughan
	# Jacob Zimmerman
	#
	# usage: uninstall_gems [<version> ...]
	#
	# examples:

	#
	# Sidekiq auto start using systemd unit file for Ubuntu 18.04
	#
	# Put this in /lib/systemd/system (Ubuntu).
	# Run:
	# 1. systemctl enable sidekiq (to enable sidekiq service)
	# 2. systemctl {start,stop,restart} sidekiq (to start sidekiq service)
	#
	# This file corresponds to a single Sidekiq process. Add multiple copies
	# to run multiple processes (sidekiq-1, sidekiq-2, etc).

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048