Kevin AB's questions

Good, I have a problem, I try to add a dependency, but this marks the following

[ERROR] /root/evolplus/backendEvol/evolplus/icova/icova-service/src/main/java/com/applying/icova/service/IdeaServiceImpl.java:[10,42] package org.apache.commons.text.similarity does not exist

The dependency in question is commons-text

https://commons.apache.org/proper/commons-text/dependency-info.html

Well I am really a novice with maven, I have tried all the ways and I have not been able to add it, then I try the following, download the jar

http://www.java2s.com/Code/Jar/c/Downloadcommontext105jar.htm

and add it as follows

https://commons.apache.org/proper/commons-text/dependency-info.html

I don't get any errors, so I think it installed fine.

My directory tree is like this

./icova ./pom.xml

./icova/icova-service ./icova/pom.xml

It is this pom.xml file that contains the dependency that I am unable to install.

I try to add the jar and remove the dependency from the pom.xml file then run mvn clean package installand its variants , and I get the following error.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project icova-service: Compilation failure

[ERROR] /root/evolplus/backendEvol/evolplus/icova/icova-service/src/main/java/com/applying/icova/service/IdeaServiceImpl.java:[10,42] package org.apache.commons.text.similarity does not exist

I guess it's because it doesn't find the dependency in question.

I would appreciate any help you can give me.

I return to angular2 after some time and I see that there are several changes, starting that directive is no longer in Component among others, I try to do the following: add the tag inside a

<list-directory [folders]='folders'></list-directory>

My understanding is that starting from angular rc5 and above, you have to declare your components in app.module , this is my app.module

  app.module.ts

import { NgModule,CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { FormsModule } from '@angular/forms';

import { HomeModule } from './+home/home.module';
import { AboutModule } from './+about/about.module';
import { TodoModule } from './+todo/todo.module';
import {MiUnidadModule } from './miUnidad/miUnidad.module';
import { SharedModule } from './shared/shared.module';

import { AppRoutingModule } from './app-routing.module';

import { AppComponent, XLargeDirective } from './app.component';
import { NavPanelLat} from './navPanelLat/navPanelLat.component';
import { NavPanelSup } from './navPanelSup/navPanelSup.component';
import { ListDirectoryComponent } from './listDirectory/listDirectory.component';

import { MaterialModule } from '@angular/material';




@NgModule({
  declarations: [ AppComponent, XLargeDirective,NavPanelSup,NavPanelLat,ListDirectoryComponent],
  imports: [
    SharedModule,
    HomeModule,
    AboutModule,
    TodoModule,
    AppRoutingModule,
    MaterialModule,
    MiUnidadModule,
  ],
})
export class AppModule {
}

export { AppComponent } from './app.component';

Being NavPanelLat, NavPanelSup and ListDirectoryComponent, components that I want to add, when I add it to my app.component.html , I have no problems.

app.component.html

<div class="row">
 <div class="col-xs-12">
      <nav-panel-sup></nav-panel-sup>

 </div>
 <div class="col-xs-3">
     <nav-panel-lat></nav-panel-lat>

 </div>
  <div class="col-xs-7">
      <router-outlet></router-outlet>  

  </div>
  <div class="col-xs-2">
    Ota cosa
  </div>
</div>

But when I want to add myUnitComponent, which is under router-outlet , I get the problem of

miUnidad.component.html

  <nav-panel-lat></nav-panel-lat>


Unhandled Promise rejection: Template parse errors:
'nav-panel-lat' is not a known element:
1. If 'nav-panel-lat' is an Angular component, then verify that it is part of th
is module.
2. If 'nav-panel-lat' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to th
e '@NgModule.schemas' of this component to suppress this message. ("  [ERROR ->]
<nav-panel-lat></nav-panel-lat>"): MiUnidadComponent@0:2 ; Zone: <root> ; Task:
Promise.then ; Value: Error: Template parse errors:
'nav-panel-lat' is not a known element:
1. If 'nav-panel-lat' is an Angular component, then verify that it is part of th
is module.
2. If 'nav-panel-lat' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to th
e '@NgModule.schemas' of this component to suppress this message. ("  [ERROR ->]

As if it was not declared, which only happens when I want to put the components under a routing-outlet, I tried to put it under myUnit.module, but I get the same error, this is my routing module just in case.

app-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';

export function getLazyModule() {
  return System.import('./+lazy/lazy.module' + (process.env.AOT ? '.ngfactory' : ''))
    .then(mod => mod[(process.env.AOT ? 'LazyModuleNgFactory' : 'LazyModule')]);
}

@NgModule({
  imports: [
    RouterModule.forChild([
      { path: '', redirectTo: '/miUnidad', pathMatch: 'full' },
      { path: 'lazy', loadChildren: getLazyModule }
    ])
  ],
})
export class AppRoutingModule { }

I want to query an api xxxxxx/yyy, as soon as a view loads, the problem is that when the page loads I don't receive a response.

This is my code.

example.ts

  ionViewWillEnter() {

    this.chats.push("Hola prueba del chat");
    this.asistenteProvider.chat("Hola")
    .subscribe(res=>{
        console.log("Respuesta enviando mensajex2",res);
        this.chats.push(res);
    },error=>{
        console.log("error",error);
    });

  }

my provider

Example.provider.ts

export class EjemploProvider {
    url:string;
  constructor(public http: Http) {
    this.url="/chat";
    console.log('Hello');
  }

  chat(mensaje:string){
    console.log("Mensaje a enviar",mensaje);
    let headers = new Headers({ 'Content-Type': 'application/json' });

    let options = new RequestOptions({ headers: headers});

    return  this.http.post(
            this.url,
            {
                data:mensaje
            },
            options
            ).map(response=>{
                return response.json();
            }
            )

}
}

When the view loads, seeing the console, the messages appear, but not the status if the request has been received or rejected.

When I send the first message I get an error and I don't receive a response

When I send more messages from the 2nd, the answer still gives me errors but the answer is given

Then when I sent messages I no longer get errors and I receive the response correctly.

I am using a proxy to be able to make the query to the api , since this does not have cors activated. For what is this?.

I have several slightly old computers thrown away, and I wanted to know how I could align them in a kind of cluster, to be able to run applications in a more "fast" way, so to speak, in which the workload can be distributed, etc. Seeing some options, maybe with apacher spark I could do it, however, what other options are there?

I am making a video site, and the question is to offer it in different qualities, is it necessary to have copies of the same video in different qualities?, since I want to do something like youtube does and can change between qualities in a video, is there a way to do it? from js?

Good, my doubt is the following, I am trying to obtain the datafrom one apithat is in url, I use $http.get, I assign it to $scope.ipsand it shows me the data in the console.log()respective one, now the problem is that it $http.getis a promise so it returns the data once they are available, but given that I would like to do the following print the data outside the $http.get, how could I do it, because I try to do it and I get the empty object, I know it is a simple example, but in other projects I have had to consult data from a api, and from of the data in that api, query data in it again forming an endless spaghetti code.

var app=angular.module("app",[]);

app.controller("main",function($scope,$http){
$scope.ips={};

var url="http://ip-api.com/json/208.80.152.201";


$http.get(url)
.success(function(data){

    $scope.ips=data;
console.log($scope.ips)

});

console.log($scope.ips);


})

For example, if you wanted to do something, another query within the same query, so on, as you see, the size of the code increases, how could you modularize it.

var app=angular.module("app",[]);

app.controller("main",function($scope,$http){
$scope.ips={};

var url="http://ip-api.com/json/208.80.152.201";


$http.get(url)
.success(function(data){

    $scope.ips=data;
    console.log($scope.ips)
    var url2="XXXXXXXXXXXXXXXXX"+data.city;
    $http.get(url2)
    ...
    ....
});

console.log($scope.ips);


})

I am trying to do the following, a query to 2 apis.

The first query is to fetch the data from a locality given a city, I handle it with promises.

The second query is to retrieve from that data 7 more data given longitude, latitude and date, I did it using an IIFE, so I tried to do it with $resource but no matter how hard I tried I couldn't solve problems with the json parsing.

Here is the code that makes the query to the api to fetch the data and update the forecast model, there are 2, one for when the location changes and the other that directly calls the function that fetch the data.

$scope.setLocation = function(loc) {
      $scope.location = loc;
      $scope.getForecastByLocation();

    };

   $scope.getForecastByLocation = function(p) {

      if ($scope.location == '' || $scope.location == undefined) {
        $scope.hasState = 'has-warning';
        $scope.message = 'Please provide a location';

      }

      $scope.hasState = 'has-success';
      console.log("LOCACION==",$scope.location);
      $scope.forecast = openWeatherMap.queryForecastDaily({
        location: $scope.location
      });


      $scope.forecast.$promise.then(function(data){

          for(var i=0;i<data.list.length;i++){
              (function(i) {
              var fecha=Date(data.list[i].dt);
              var fecha2=new Date(fecha);
            if(fecha2.getDate()+(i-1)<10){
             var dias="0"+(fecha2.getDate()+(i-1));
            }
            else{
              dias=fecha2.getDate()+(i-1);
            }

              var fechax=fecha2.getFullYear()+"-"+fecha2.getMonth()+"-"+dias+"Z";
              var lon=parseInt(data.city.coord.lon);
              var lat=parseInt(data.city.coord.lat);
              var url="http://api.openweathermap.org/v3/uvi/"+lat+","+lon+"/"+fechax+".json?appid=943d3a75c72ea297aa73f129275d2140";

            $http.get(url)
            .success(function (dat) {
            data.list[i].radiacion=dat.data;
               console.log("Sucesss=",$scope.forecast.list[i].radiacion)
            });



              })(i);



        }

       });
    }

This is the part of the code that executes the location change setLocation(item) and at the same time makes the query to the apis , it executes fine when I click it from

    <div class="col-xs-12">
        <div>
        <h1>Listado de ciudades importantes</h1>
            <div class="form-inline" role="form">
                <span class="btn-group" >
                    <button ng-repeat="item in exampleLocations | orderBy:'name':true" ng-click="setLocation(item)" type="submit" class="btn btn-default">{{item}}</button>
                </span>

                <br><br><br><br>
                <span class="form-group {{hasState}}">
                    <label class="sr-only" for="location">Ciudad</label>
                    <input ng-model="location" ng-enter="getForecastByLocation(location)" type="text" class="form-control" id="location" placeholder="Ciudad">
                </span>
                <button  class="btn btn-primary " ng-click="getForecastByLocation(location)">Buscar!</button>

                <span ng-show="message" class="alert"><span class="glyphicon glyphicon-arrow-left">&nbsp;</span>{{message}}</span>
            </div>
        </div>
    </div>

It runs without any problem, but now comes the following, I also have a side menu with the list of cities, this one, I assign a setLocation(post) event, similar to the previous one, it runs normally, in the logs it appears that it does the query the api, when I show the data that gets the promise in the js code that I put above, it shows me normally (img 3), however the $scope.forecast is not updated, here is part of the code that is in img2 and displays the result of the query to the api.

    <div class="col-xs-12">
        <div class="">
            <p> FORECAST== {{forecast}}</p>
            <h3>  

                {{forecast.city.name | placeholder:'?'}}, {{forecast.city.country | isoCountry}}
                <small>Lon: {{forecast.city.coord.lon | number:2}} Lat: {{forecast.city.coord.lat | number:2}} Population: {{forecast.city.population | number:0}}</small>
            </h3>
        </div>
    </div>
</div> 

// Lateral menu options cities

  <ul  class="dropbox_citys">
                <li ng-repeat="post in exampleLocations | orderBy:'name':true"  >
                    <a ng-click="setLocation(post)">{{post}}</a>
                </li>
            </ul>

Here I leave some images, the first of what I want to do in the side menu are the lists of cities, click and update the model, $scope.forecast, in the logs using the side menu or from the same interface where there are all the cities that you see on the screen, the result is the same, the headers are the same, but using the side menu the update of the model is not executed, $scope.forecast, it is not updated in the html, even printing the data that comes out when they make the queries which do exist.

//Clicking on the side menu It is not updated //Clicking on the buttons of the index.html#forecast If it is updated **//Logs is the same for img 1 and img2 **

I know it's something simple, however I haven't found the problem for a long time, maybe I'm forgetting something. What could be happening?

---Update index.html---

<!DOCTYPE html>
<html lang="en" ng-app="openWeatherApp">
........
.......
<body ng-controller="OpenWeatherCtrl">
.............

<div id="page-content-wrapper" class="col-xs-12">
                <div class="container-fluid">
                        <div class="col-xs-12 sect-2">
                            <div class="col-xs-12 sect-2">
                                <div class="col-xs-12 divs_ini_container">
                                    <h2>Climas</h2>
                                    <div class="col-xs-12 div_ini_01 sect-2" >
                                        <center>
                                              <div ng-view></div>
                                        </center>
                                        <p>
..................
..................

---Update 2---

console log de $scope.location
Repositorio:https://github.com/kevinlllR/arquisoft

I understand that validations have to be done at the backend level for security, but what I want to do is the following, validate at the frontend level with angular, and thus make the server work less, say, but if I do it in the frontend the user could modify the script and everything it does, to be able to send what they want, then how could I make a function, in the backend that tells me that the user is validated, so he no longer has to do another validation again. Any ideas?.

Regarding my 2nd question, I am using nodejs to run a server with sessions stored in redis with express session, but when testing with loadtest npm, with 20 concurrent users I start getting errors that req.session is not found How could I improve session performance?

I want to eliminate sensitive data that appears in the diff when commits are compared on github, for x reasons I put a sensitive data in a field, and after changing it and pushing it, this data continues to appear in the commit history as part of a change in a commit, how can I solve this problem, without deleting the commit?

I have the following routes and the following middlewares

router.use(logged.unlogged);
router.use("/logout",logged.logged);
router.route("/login").get(login.login_get).post(login.login_post);
router.route("/recuperar").get(recuperar.recuperar_get).post(recuperar.recuperar_post);
router.route("/registrar").get(registrar.registrar_get).post(registrar.registrar_post);
router.route("/logout").get(logout);
module.exports=router;

Middleware

var logged=function(req,res,next){

    if(req.session.user_id!=undefined){
        console.log("logged if");
        next();
    }
    else{
        console.log("logged error");
        return res.redirect("/");
    }
}

    var unlogged=function(req,res,next){
        if(req.session.user_id!=undefined){
            console.log("El usuario ya esta logeado",Date.now());
            return res.redirect("/");

        }
        else{
            console.log("unlogged else",req.session.user_id); 
            next();
        }
    }


    module.exports={
        logged:logged,
        unlogged:unlogged
    }

What happens is the following, when I execute, and for example enter user/login, I log in, a session is saved in memory and I store the id in req.session.user_id, after this I put those middlewares so that if I wanted to enter some of those logged in endpoints would simply redirect me, but in the case of logout, what I wanted was that if I was logged in I would simply log out by setting req.session.user_id=undefined (is this ok?).

It happens that I log in, the session is activated, if I try to enter login, retrieve, register redirects me, but when I try to enter logout it also redirects me without closing the session, the first middleware is executed, but I put it so that the 2nd, as I see it reads it sequentially and there should be a next to read the second, I could put it using something like req.path.indexOf("logout") , but my question is if there is another way to give it more importance like this tell the 2nd middleware from my route using use.

Edit I have done it this way that seems more logical to me.

var unlogged=function(req,res,next){
    if(req.session.user_id!=undefined){
        if(req.path.indexOf("logout")>0)next();
        console.log("El usuario ya esta logeado",Date.now());
        return res.redirect("/");

    }
    else{
        console.log("unlogged else",req.session.user_id); 
        next();
    }
}

I have my model user.

// models/user.js
var mongoose=require("mongoose");
var Schema=mongoose.Schema;
var userSchema=new Schema({
    name:{
        type:String,
        required:"Es necesario un nombre",
        maxlength:[10,"Nombre muy largo max 10"]
    },
    lastName:{
        type:String,
        required:"Es necesario el apellido",
        maxlength:[10,"Apellido muy largo"]
    },
    userName:{
        type:String,
        unique:true,
        require:"Es necesario un username",
    },
    password:{
        type:String,
        require:"Es necesario un password",
        validate:{
            validator:function(pass){
                    if( this.password_confirmation!=undefined)
                        return this.password_confirmation==pass;
                    else{
                        return true;
                    }
            },
            message:"Las contraseñas son diferentes"
        }
    },
    email:{
    type:String,
    require:"Es necesario un email"
    }
})

userSchema.virtual("password_confirmation").get(function(){
    return this.p_c
}).set(function(password){
    this.p_c=password;
})

var User=mongoose.model("User",userSchema);
module.exports=User;

An endpoint to log in.

//  routes/user.js
router.route("/login").get(login.login_get).post(login.login_post);

// login_post

var login_post=function(req,res,next){

    if(!req.body.password || !req.body.userName){
        res.send("Error");
    }

    User.findOne({userName:req.body.userName,password:req.body.password},function(err,us){
        if(err)console.log(String(err));
        console.log("Usuario encontra",us);
        res.send(us);
    });

}

What I want to do is the following, validate from the model before entering User.findOne, for example something like this.

var user=new User(req.body,function(err){
   if(err)res.send("Error",String(err));
});

User.findOne({userName:user.userName,password:user.password},function(err,us){
        if(err)console.log(String(err));
        console.log("Usuario encontra",us);
        res.send(us);
    });

to avoid using this and validating from the model.

  if(!req.body.password || !req.body.userName){
            res.send("Error");
        }

or else you can that way maybe something like that.

    var validate=function(model,next){
    if(//NO SE QUE IRIA PARA VALIDAR EL MODELO//){}
    next("//Algo como los errores del modelo model.err//);    
    }   

   var user=new User(req.body);
   validate(user,function(err){
       if(err){
            console.log(String(err));
            res.send("Hubo un error validando los datos",err);
        }
}

}

This is to be able to search for users, since to create it is not necessary to do something additional, because if it throws the errors that I have made.

Since when doing

User.findOne({userName:req.body.userName,password:req.body.password},function(err,us){
        if(err)console.log(String(err));
        console.log("Usuario encontra",us);
        res.send(us);
    });

without the validation it throws only that it did not find the user, and no error if for example I do not put password.

for dm

I did not know about DTO, when it comes to validate it looks good, so if I should create a DTO schema in specific cases, but what I was going to do is the following, what I was doing in my examples was to bring the error pull, which defined in the model since for example if I put something like

User.create(req.body,function(err,us){
if(err) console.log(String(err)); 
console.log(us);
});

This one does bring me the set of errors, for example if passwords do not match, or a field is missing, I wanted to do something like this for findOne , but this does not bring me the pull of errors (those defined in userSchema) to show them in a toast , but rather it does not detect any error, therefore it does not return anything.

With what you put to create a DTO I could do it, but the point is that I wanted to minimize the code that I put, in addition to the libraries, that's why my query.

If I missed the response codes, I still need to optimize the code better.

My query is the following, I want to manage user sessions, that is, an account, each have their own things, I also want to protect my apis, doing some research, I have seen that I can use jwt in nodejs together with sails to manage sessions , I have also seen that with passport I can do it, now well, with respect to apis protection I have seen that it can be done with jwt.

-For those who have already worked with it, what other alternatives exist to manage sessions (I see that passport is discontinued) and according to your experience, which one would you choose for it, the same for API protection.

I wanted to know how I can install nvidia-docker on windows, since in its documentation, it only has support for linux, if there is a guide out there that I have not found. https://github.com/NVIDIA/nvidia-docker/wiki/Installation

What is the difference in these 2 implementations

a=[1,2,3,4,5]
a=list([1,2,3,4,5])

I want to do the following:

import sys

for line in sys.stdin:
    a,b,c,d=line.split(" ")
    e=(a+b+c+d)/6
    print(a,b,c,d,e)

I want a, b, cand dto be integers or float to be able to operate on e, I can put float(a), float(b), etc... but it is very laborious, is there a way to declare the variable as float, integer or whatever ?

I try to do:

 float(a), float(b), float(b), float,(d)=line.split(" ")
 a, b, c, d = float(line.split(" ")

Which is not correct. Doing the following I have no problems.

import sys

for line in sys.stdin:
    e = 0.0
    for res in line.split(" "):
        e = float(res) + e
        print(e)

But it seems to me many lines to be able to capture only a few numbers.

What method can I use to be able to capture the data?

In C I would do it like this:

float a, b, c, d;
scanf("%f%f%f%f", &a, &b, &c, &d);

I'm trying to send data from a client to an endpoint in nodejs and with socket io graph this in real time on a temperatura vs tiempo.

Client side:

else{

  sensors=["Rimac","Cercado"];

  for (sensor in sensors){
  var date = new Date().toJSON();

  var datos={
    name:sensors[sensor],
    valor:Math.random()*20,
    fecha:date
  };

console.log(datos);
    var options = {
  uri: 'http://localhost:7777/api/sensor',
  method: 'POST',
   headers: {
        "content-type": "application/json",
        },
  json: datos
};

  request(options);
  sleep(1000);


};

The data is sent normally to the indicated endpoint.

This is the part of the server where the endpoint that receives the request is

module.exports=function(app,Sensor,io){
var express=require("express");
var router=require("express").Router(); 

  router.route("/sensor").get(function (req, res){
  Sensor.find(
    function(err, Sensor) {
      if (err)
        res.send(err)
      else{
        console.log("Exito al retornar todo");
        res.json(Sensor);

      }
      // devuelve todas las Sensors en JSON
        }
      );
}).post(function(req,res){
  console.log("BODY=");
  console.log(req.body)
    Sensor.create(
    {
    name:req.body.name,
     valor:req.body.valor,
     fecha:req.body.fecha
   } ,
      function(err) {
        if (err){
          console.log(err);
          res.send(err);
        }
        else{
          io.sockets.on("connection",function(socket){

             var temp = parseFloat(req.body.valor);
        var date = new Date(req.body.fecha); 
        console.log(date);
        console.log(temp);
        //Se pasan los datos a el cliente web ahi se manejara para mostrar la grafica en tiempo real mediante higcharts
        socket.emit('post', date.getTime() - ( date.getTimezoneOffset() * 60000) , temp );    
          })
       console.log("Dato creado exitosamente");
}

});

});
  return router;
}

This is the part of the view that receives the data that comes by post (it should be that way but they are not shown, otherwise I have to update for the changes to be effective).

  var socket = io.connect('http://localhost:7777/');

    var chart;

    chart = new Highcharts.Chart({
        chart: {
            renderTo: 'chart', 
            defaultSeriesType: 'spline',
            events: {
                load: function() {
                    // Cada vez que reciba un valor desde el socket, lo meto en la gráfica
                    socket.on('post', function ( time, data ) {
                        console.log("LLEGO DATO O NO?");
                        console.log(data);
                        console.log("TIEMPO");
                        console.log(time);

                        var series = chart.series[0];
                        series.addPoint([time, data]);
                    });
                }
            }
        },
        rangeSelector : {
            selected : 100
        },
        title: {
            text: 'Datos del Sensor de temperatura'
        },
        xAxis: {
            type:'datetime',
            tickPixelInterval: 50,
            maxZoom: 20 * 1000
        },
        yAxis: {
            minPadding: 0.1,
            maxPadding: 0.1,
            title: {
                text: 'Valores',
                margin: 10
            }
        },
        series: [{
            name: 'Sensor Temperatura',
            data: []
        }]
    });

The issue is in the part of the endpoint that receives the data, they arrive intact, but when I check I see that the socket is skipped and it sends me the message console.log("Data created successfully"); , and the states in the graph in highcharts are not shown in real time, for the changes to be effective I have to update the window, and only then do the data appear in the console (the ones that should appear before sending the data).

edit:

Seeing the logs with morgan, when the data is sent, the 2 take the same date / time, I suppose this is due to the synchronization issue that I must put in date , and also the post request made is not shown until the client is closed , it's like keeping the connection alive.

Hi, I'm a bit confused on the subject. I understand that the VPS is a physical machine that has been divided into virtual environments, a fixed fee is charged and it does not have a swap partition.

The cloud server has a special infrastructure (I don't know what this refers to), and it abstracts the physical hardware of the server (what exactly does this refer to?), it has a swap partition and it is generally better scalable than the vps.

Among the doubts that I have put in parentheses, what other differences are there between these 2 technologies, and if when referring to cloud computing it would also apply to the case of vps.

I put the case of digitalocean in many places it comes out that they call it a vps server and other cloud servers, is there an error in the interpretation?

As the title says, that's my question. So MSSQL has SSIS, what options are there in the non-relational and open source approach?

hello I just added space to a virtual OS in virtualbox from 5.6G to 11GB, virtualbox recognizes it, but inside, with fdisk I get that to the partition that sda4 to which he had added 5 gb, in df it is not reflected,

DF:/dev/sda4 5.6GB
fdisk -l :/dev/sda4 10.6GB 

Any solution? Because apparently the space has not been added to the partition because when trying to install something I get that the disk is full.

How can I generate 20 txt relative to the pages of a pdf?

var fs = require('fs');
var pdfUtil = require('pdf-to-text');
var pdf_path = "/home/kevin/Downloads/principito.pdf";

        var i=0;
        for(i=0;i<=10;i++){
        var option = {from:i, to:i};

var doc='./file'+i+'.txt';
//Omit option to extract all text from the pdf file 
pdfUtil.pdfToText(pdf_path,option, function(err, data) {
     fs.writeFile(doc, data, function(err) {
        if( err ){
            console.log( err );
        }
        else{
            console.log(doc);
        }
    });

});

This is my code, but it generates the following:

./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt
./file20.txt

everything is concatenated, I guess it's because of the asynchronous behavior of nodejs , a handy.