delwar2016

https://gist.github.com/crtr0/2896891

https://socket.io/docs/rooms-and-namespaces/

delwar2016

Need to create extension:

1. manifest.json

2. 19x19px PNG file

3. popup.html

4. popup.js

delwar2016

https://certbot.eff.org/#ubuntutrusty-nginx

https://askubuntu.com/questions/363200/e-unable-to-correct-problems-you-have-held-broken-packages


Use aptitude instead of apt-get. It is more intelligent. It not only will handle downgrading conflicting packages for you, but will make a series of recommendations asking you which of many possible suggested working scenarios you would like.

sudo aptitude install myNewPackage
If you don't have aptitude on your machine yet, get it with

delwar2016

Suppose we have a schema as follows

var User = require('./schemas/UserSchema').User;

and we want to write unit test for like bellow code:

var getUserById = function () {
  return User.findOne({_id: '001'}).exec();
};