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# from http://www.rubydoc.info/github/plataformatec/devise/master/Devise/Models/Authenticatable

# Poner en el modelo User
def special_condition_is_valid?
  permitted_emails = [
    # Poner acá los emails permitidos para acceder
    "email1@example.com",
    "email2@example.com"
  ]
  if permitted_emails.include?(self.email)

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git branch -m old_branch new_branch         # Rename branch locally    
git push origin :old_branch                 # Delete the old branch    
git push --set-upstream origin new_branch   # Push the new branch, set local branch to track the new remote

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<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <match target="font" >
    <edit mode="assign" name="rgba" >
      <const>rgb</const>
    </edit>
  </match>
  <match target="font">
    <edit mode="assign" name="lcdfilter">

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#!/bin/bash
pg_dump -i -h <hostname> -p 5432 -U <user> -F c -b -v -f /tmp/<filename>.sql <database_name>
pg_restore -i -h <local_hostname> -p 5432 -U <user> -d <database_name> -v /tmp/<filename>.sql

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/etc/hosts
/var/lib/mysql/
/etc/nginx/sites-available
/etc/nginx/nginx.conf # maybe?

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<?php

use LaravelBook\Ardent\Ardent; // it can be Eloquent too

class BaseModel extends Ardent {

    protected $_name;

    public static function optionList($attribute = 'name') {
        $model = static::getModel();

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server {
    client_body_in_file_only clean;
    client_body_buffer_size 32K;

    client_max_body_size 300M;

    sendfile on;
    send_timeout 300s;
    # Port that the web server will listen on.
    #listen          80;

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<?php
/**
 * this is a fix mainly for wordpress, to prevent xml error
 * 
 * this solution is from http://www.vichaunter.com/desarrollo-web/solucion-para-error-line-2-column-6-xml-declaration-allowed-start-document-wordpress
 *
 */

function ___wejns_wp_whitespace_fix($input) {
    /* valid content-type? */

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apt-get install php5-dev php-pear make mongodb
pecl install mongo
echo 'extension=mongo.so' > /etc/php5/mods-available/mongodb.ini
cat  /etc/php5/mods-available/mongodb.ini
ln -s /etc/php5/mods-available/mongodb.ini /etc/php5/fpm/conf.d/20-mongodb.ini
service php5-fpm restart

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server {
    listen          80;
    server_name     www.example.com;

    root            /var/www/vhosts/example.com/public/;

    location /
    {
        index index.php index.html index.htm;
    }