71 results for: commands
How to upload files to the server using JavaScript
In this tutorial we are going to see how you can upload files to a server using Node.js using JavaScript, which is very common. For example, you might want to upload an avatar, a thumbnail, a PDF file or any other image or file in various formats. We are going to…
Category : Javascript 14-06-2023 by Janeth Kent
Android Hidden Codes: unveiling custom dialer codes and their functionality
In the world of Android smartphones, there exist numerous hidden codes that can unlock a treasure trove of functionalities and features. These codes, known as custom dialer codes, provide access to various settings, diagnostics, and information that are not readily available through regular menus. In this article, we will explore…
Category : Mobile 02-06-2023 by Janeth Kent
Optimizing the Robots.txt file for Google
The Robots.txt file serves to give information to Googlebot and other robots that crawl the Internet about the pages and files that should be indexed on our website. Although it is not essential, the Robots.txt file is of great help to Google and other crawling robots when indexing our page,…
Category : Programming 21-03-2024 by Janeth Kent
How to generate an SSH key and add it to GitHub
In this short tutorial we are going to see how you can generate a new SSH key and add it to GitHub, so you can access your private repositories and manage them locally or from your server, running the commands git pull, git push and any other that has restrictions. This…
Category : Programming 08-03-2024 by Janeth Kent
The history of video games: from entertainment to virtual reality
The release of Return to Monkey Island (September 2022) has jogged video game fans' memories back to 1990, when The Secret of Monkey Island debuted, a graphic adventure based on the vicissitudes of Guybrush Threepwood, a somewhat awkward would-be pirate whose story inspired the film Pirates of the Caribbean. While…
Category : Videogames 28-11-2022 by Janeth Kent
Node.js and npm: introductory tutorial
In this tutorial we will see how to install and use both Node.js and the npm package manager. In addition, we will also create a small sample application. If you have ever used or thought about using a JavaScript-based development tool, you have probably noticed that you need to install…
Category : Javascript 05-11-2021 by Silvia Mazzetta
Advanced Android tutorial: discover all your phone's secrets
It is highly probable that you are not taking advantage of even half of the potential that your Android device has to offer. These small pocket computers, which we call smartphones, have increasingly advanced and powerful hardware that, together with the possibilities offered by an operating system as flexible as…
Category : Mobile 06-05-2021 by Janeth Kent
The best free tools to Transcribe audio to text
With this article we bring you a list of the best tools for transcribing audio to text, offering you some that simply do it with dictated audio, but also others capable of loading audio files. The collection is varied, and we have mobile applications, web pages, and computer programs capable…
Category : Software 15-04-2021 by Janeth Kent
6 Best Alternative Privacy Focused Browsers in 2021
In today's article we take a look at free private browsers which are relevant in 2021. We will compare their advantages and disadvantages, specs, etc. Let's get into it. What are alternative browsers? Alternative browsers are mostly trying to increase browser security, by various methods, such as browser hardening, sandboxing, encryption forcing, etc. When…
Category : Software 22-04-2021 by
Starting with Bootstrap-Vue step by step
Today we will show you how to use BootstrapVue, describe the installation process and show basic functionality. The project’s based on the world's most popular CSS framework - Bootstrap, for building responsive mobile-first landing page and combines it with Vue.js. Bootstrap-Vue does not yet support Vue 3. So if you want to…
Category : Javascript 13-04-2021 by
The best free tools for linkbuilding
Linkbuilding is one of the main factors in improving the SEO positioning of a page. Having a profile of inbound links from pages with great authority can mean the difference between appearing at the top of the search engine or not. However, practicing linkbuilding, both in text and images, is one…
Category : Seo & sem 23-12-2020 by Janeth Kent
What's the Difference between Google TV and Android TV?
At the end of September, Google launched the renewal of its classic dongle. The new Google Chromecast didn't arrive alone, but added two very important innovations compared to the devices of previous generations that have been turning normal televisions into smart TVs since 2013. The first of these novelties is the…
Category : Software 27-10-2020 by Silvia Mazzetta
Network and port scanning with Zenmap
This article goes out to all the computer nerds who are, when it comes to networking, more on the noob-side of the crowd. It does not have to be complicated and everyone with patience and eagerness to learn something new can relatively quickly gain the knowledge necessary to feel more…
Category : Security 08-10-2020 by Iveta Karailievova
The concept of Model-View-Controller (MVC) explained
In software engineering, we use design patterns as reusable solutions to a commonly occurring problem, a pattern is like a template for how to solve a problem. Model-View-Controller (MVC) is a software design pattern that divides the related program or web application into three interconnected elements or components. Each of these…
Category : Programming 22-10-2020 by
The package managers npm and yarn: main differences
Npm and yarn are package managers that help to manage a project’s dependencies. A dependency is, as it sounds, something that a project depends on, a piece of code that is required to make the project work properly. In the past we had only npm but it had so many issues…
Category : Javascript 19-08-2020 by Luigi Nori
Web shells as a security thread for web applications
Over the past two decades, web applications as an alternative to traditional desktop application have been on to rise. As their name suggests, they are installed on web servers and accessed via a web browser. This gives web apps a rather long list of advantages: multi-platform cross-compatibility, no installation required for…
Category : Security 04-05-2020 by Iveta Karailievova
Linux For Dummies: Permissions
In the previous articles I made a short introduction to the Unix world and in the following article I have dealt with the basic commands for the file system management. Today we are going to talk about permissions. We are going to take Ubuntu as an example, but in the other distros the working mechanism…
Category : Operating systems 14-03-2020 by Alessio Mungelli
How to Install Node.js and NPM on Ubuntu 18.04
Node.js is a JavaScript platform for general programming that allows users to create network applications quickly. By leveraging JavaScript in both frontend and backend, Node.js makes development more uniform and integrated. Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. runtime for easily building fast, scalable network applications. In this…
Category : Development 24-04-2020 by Luigi Nori
Linux for Dummies: Ubuntu Terminal
I introduced in the previous article, available here, the basic concepts concerning the Linux world. Today we are going to have a look to some basic operations that we can perform using the terminal in an Ubuntu-like operating system. What is the command line? Shell, terminal and command line are words that commonly stand for a…
Category : Operating systems 27-02-2020 by Alessio Mungelli
Linux for Dummies: Introduction
If you have thought about migrating from Windows to a Unix operating system, or Linux specifically there are things you should know. The goal is to give essential information (and not) to take the first steps in the world of the "penguin". What is Linux? With the word Linux we commonly refer…
Category : Operating systems 21-08-2020 by Alessio Mungelli
How to see the websites visited during the incognito mode and delete them
One of the features of any browser's incognito mode is that it does not store visited web pages in history. However, there is a method for displaying the last sites you accessed with your browser, regardless of whether or not you set it to incognito mode. They will all appear in…
Category : Security 21-02-2020 by Silvia Mazzetta
Vanilla JavaScript equivalent commands to JQuery
JQuery is still a useful and pragmatic library, but chances are increasingly that you’re not dependent on using it in your projects to accomplish basic tasks like selecting elements, styling them, animating them, and fetching data—things that jQuery was great at. With broad browser support of ES6 (over 96% at…
Category : Javascript 29-08-2019 by Luigi Nori
Now you can download the new Windows terminal: new, modern, fast, efficient, and powerful.
Microsoft has announced its new Windows Terminal, which will bring together PowerShell, CMD and WSL, includes a real Linux kernel that allows you to run more Linux software on Windows and with better performance than WSL 1 in one place to end the diversification that currently has the operating system…
Category : Software 26-06-2019 by Janeth Kent
How to Create your own custom Linux system, step by step
Here is some information where you can learn step by step how to customize a Linux distribution to create your own Linux. If we follow the steps, even the less experienced will be able to create their own Linux to their liking. Personalizing a distribution not only serves to have a…
Category : Operating systems 14-06-2019 by Janeth Kent
14 JavaScript Animation Libraries
Well - designed and smooth animations are one of the most important things that makes an app stand out from the crowd. The purpose of UI animations is to help users understand the product in a more interactive way. While surfing the web in search of a cool animation library in…
Category : Javascript 17-05-2020 by Janeth Kent
A roadmap to becoming a web developer in 2019
There are plenty of tutorials online, which won't cost you a cent. If you are sufficiently self-driven and interested, you have no difficulty training yourself. The point to learn coding I think is to read a lot of code of other developers, then typing code and testing to see what…
Category : Programming 30-05-2019 by Janeth Kent
The Absolute Beginner's Guide to Sass
You've probably heard about CSS preprocessors before, whether it's Sass, LESS or Stylus, and they're all great tools to maintain your CSS, especially when you work with large codebases. For "lay" (;-)) people: A CSS preprocessor is a program that allows you to generate CSS from the unique syntax of the…
Category : Css 05-02-2019 by Janeth Kent
80 Linux Network Monitor Software & Tools for Managing & Monitoring Unix/Linux Systems
It’s hard work monitoring and debugging Linux performance problems, but it’s easier with the right tools at the right time. Finding a Linux Network Monitor tool or Software package for your Critical servers and services that are running on those systems in one of the most (if not the most)…
Category : Security 23-10-2018 by Janeth Kent
Useful Terminal Commands Every Web Developer Should Know About
The command line interface (CLI), or Terminal is considered by many to be the Holy Grail of computer management. At one time the CLI was the only way to accomplish anything on a computer; then, the CLI gave way to the graphical user interface (GUI) as the popularity of PCs…
Category : Operating systems 22-06-2018 by Janeth Kent
Install macOS High Sierra in VirtualBox on Windows 10
Whether you want to occasionally test a website in Safari, or try out a little bit of software in the Mac environment, having access to the latest version of macOS in a virtual machine is useful. Unfortunately, you’re not really supposed to do this—so getting macOS running in VirtualBox is,…
Category : Operating systems 12-04-2021 by Janeth Kent
MYSQL: How to create a new user and give it full access only to 1 database
To create a new user in MySQL and give it full access only to 1 database, say dbTest, these are the MySQL commands to do that To create the user: CREATE USER 'user'@'hostname'; To give it access to the database dbTest: GRANT ALL PRIVILEGES ON dbTest.* To 'user'@'hostname' IDENTIFIED BY 'password'; If you are running…
Category : Databases 07-02-2018 by Janeth Kent
Install Java in Ubuntu 16.04
Java and the JVM (Java's virtual machine) are widely used and required for many kinds of software. This article will guide you through the process of installing and managing different versions of Java using apt-get. Installing the Default JRE/JDK The easiest option for installing Java is using the version packaged with Ubuntu.…
Category : Networking 23-11-2017 by Janeth Kent
ArangoDB, install and configure the popular Database in ubuntu 16.04
Introduction to ArangoDb, open source, NoSQL, multi-model database BigData seems to be getting stronger every day and more and more NoSQL databases are coming out to the market, all trying to position themselves in the lead to be the reference. This week I tried ArangoDB! Another NoSQL database? Today I'm going to…
Category : Databases 14-11-2017 by Janeth Kent
5 best open source version control systems tools for sysadmins
As a system admin, the chances are you collaborate with multiple people across the company, therefore you will probably know the stress of constantly transferring files and version controlling the changes. Version control tools are a great way to enable collaboration, maintain versions, and track changes across the team. Perhaps the…
Category : Software 13-05-2017 by Janeth Kent
8 Best Google Apps You Have No Idea About
There are dozens upon dozens of Google apps and other products out there that are worth checking out. Sure search, Gmail and Google Calendar are must-haves, but Google’s utility extends far beyond its core products. Earlier today, we told you about 8 apps every Android user should know about. Here…
Category : Software 09-05-2017 by Janeth Kent
How to Configure the Mod_Security Core Ruleset in Ubuntu
ModSecurity is a Web Application Firewall, a program that can be used to inspect information as it passes through your web server, intercepting malicious requests before they are processed by your web application. This tutorial will show you how to install ModSecurity on Apache, and configure it with some sensible rules provided…
Category : Servers 04-03-2017 by Janeth Kent
Install Shotcut Video Editor in Ubuntu 16.04, 16.10
The Shotcut video editor software has reached the 16.11 release, here’s quick tip for how to install it in Ubuntu 16.04, Ubuntu 16.10. Shotcut is a free, open source, and cross-platform video editor for Windows, Mac and Linux. Major features include support for a wide range of formats, no import required…
Category : Multimedia 25-02-2017 by Janeth Kent
How to Connect to a Remote Server via SSH from a Linux Shell
Introduction Secure Shell (SSH) is a UNIX-based command interface and protocol for securely getting access to a remote computer. SSH is actually a suite of three utilities - slogin, ssh, and scp - that are secure versions of the earlier UNIX utilities, rlogin, rsh, and rcp. SSH commands are encrypted and…
Category : Servers 16-02-2017 by Janeth Kent
Setup FTP server with VSFTPD in Ubuntu 16.04
Introduction FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files. Many casual Internet users expect to download directly from their web…
Category : Servers 14-02-2017 by Janeth Kent
How to install and setup Varnish in Ubuntu 16.04
One of the problems with running a site with many users is that the constant requests for dynamic content can really bog down a web server. In order to solve this problem, many big companies turn to a tool called Varnish. It’s an HTTP accelerator that caches both static and…
Category : Networking 02-01-2017 by Janeth Kent
Install Apache, MariaDB and PHP7 on Ubuntu 16.04
Ubuntu 16.04 LTS Xenial Xerus comes with PHP7 by default so you don’t have to rely on third-party PPA to get PHP7 installed. In this tutorial, we are going to look at how to install Apache, MariaDB and PHP7 (LAMP stack) on Ubuntu 16.04 LTS Xenial Xerus. Update: This tutorial is…
Category : Servers 18-11-2016 by Janeth Kent
Ubuntu servers security: 25 security tools to armor your system
The Ubuntu repositories contain several useful tools for maintaining a secure network and network administration.This security tools include network scanning,attack detection,Virus Detection etc. 1) Wireshark -- network traffic analyzer Wireshark is a network traffic analyzer, or "sniffer", for Unix and Unix-like operating systems. It is used for network troubleshooting, analysis, software and…
Category : Servers 14-09-2016 by Janeth Kent
Install HHVM + Nginx on Ubuntu 14.04
The LEMHH software stack is a group of software that can be used to serve dynamic web pages and web applications. This is an acronym that describes a Linux operating system, with an Nginx web server. The backend data is stored in MySQL and the dynamic processing is handled by…
Category : Networking 12-05-2017 by Janeth Kent
How To Install PHP7 On The Main OS's
Installing PHP 7.0.0 is easier than ever. Here are instructions for installing the latest version on different platforms: First step: Uninstall PHP 5.x If you already have PHP 5.x installed you may encounter conflicts. Make sure to completely remove PHP 5.x from your system before installing php 7. Ubuntu 14.04, 15.04, and…
Category : Operating systems 13-03-2016 by Janeth Kent
Guide: Install Free SSL Certificate On Your Website with Let's Encrypt
Let's Encrypt – an initiative run by the Internet Security Research Group (ISRG) – is a new, free, and open certificate authority recognized by all major browsers, including Google's Chrome, Mozilla's Firefox and Microsoft's Internet Explorer. The Free SSL Certification Authority is now in public beta after testing a trial among…
Category : Networking 09-05-2020 by Janeth Kent
The Best Free SSH Tabbed Terminal Clients for Windows
PuTTy is an emulator for the terminal. It allows you to log into another computer that can be on the same network or accessed via the internet. The basic program has no security, but you can add authentication and encryption to SSH to protect internet connections. The tool also includes…
Category : Networking 18-12-2023 by Janeth Kent
10 Useful PHP Image Manipulation Libraries
In this article, we listed 10 PHP Image Manipulation Libraries which help developers making their tasks simpler. 1. Imagine Imagine is a OOP library for image manipulation built in PHP 5.3 using the latest best practices and thoughtful design that should allow for decoupled and unit-testable code. In order to produce RGB code…
Category : Php 09-06-2014 by Janeth Kent
8 AWESOME HTML5 ANIMATION TOOLS
GOOGLE WEB DESIGNER Google has launched Google Web Designer, a new beta app CreatING engaging, interactive HTML5-based designs and motion graphics that can run on any device. The Windows and Mac app aims to streamline the post-Flash online world with the option of code or graphical animation creation, for those of…
Category : Web design 29-05-2014 by Janeth Kent
PHP: list of best awesome PHP libraries
It is an exciting time to be a PHP developer. There are lots of useful libraries released every day, and with the help of Composer and Github, they are easy to discover and use. Here is a complete list of the coolest that We’ve come across. Package Management Libraries for package and…
Category : Php 27-04-2014 by Janeth Kent
HowTo Create Linux Swap On Ubuntu 12.04
About Linux Swapping Linux RAM is composed of chunks of memory called pages. To free up pages of RAM, a “linux swap” can occur and a page of memory is copied from the RAM to preconfigured space on the hard disk. Linux swaps allow a system to harness more memory than…
Category : Networking 10-02-2014 by Janeth Kent
Ubuntu: How To Start Program As Service
According to Ubuntu’s Upstart website, “Upstart is an event-based replacement for the /sbin/init daemon which handles starting of tasks and services during boot, stopping them during shutdown and supervising them while the system is running.”Basically, Upstart is an init daemon that replaces the /etc/init.d scripts.It comes with Ubuntu 6.10 and…
Category : Networking 10-10-2013 by Janeth Kent
How to import and export a large database using SSH
The following code snippets will allow you to import and export a database Command Line. To get SSH access to your hosts server you will need to contact your web hosting company, our suggestion is that you find a reliable, high-performing, secure hosting company that can help you. In case you are on a…
Category : Databases 25-06-2019 by Janeth Kent
PHP files are downloaded by browser instead of processed by the server, how to solve it?
After upgraded some packages in my ubuntu server, sometimes php configuration goes crazy and PHP files are downloaded by browser instead of processed by the server, how to solve it? Here are the steps to solve fastly the problem. Follow thiese commands: Code: sudo a2enmod php5 and it said "Module php5 already enabled". re-starting apache2…
Category : Networking 16-08-2013 by Janeth Kent
PHP: Getting started with Object Oriented Programming in PHP5
This is a tutorial covers some main concepts of OOP in PHP5 with usable examples (however useless the something may be). The tutorial only covering a few fundamental subjects, all subjects are complete in and of themselves. What is OOP? Object Oriented Programming, referred to as OOP is a way to efficiently…
Category : Php 12-08-2013 by Janeth Kent
The Future of Web Browsing: Liberating Content from the Confines of Space
Since its inception, the World Wide Web has revolutionized the way we access and interact with information. However, with the rapid advancements in technology and the emergence of new paradigms, the future of web browsing is poised to undergo a radical transformation. In this article, we explore an intriguing possibility…
Category : News and events 28-06-2023 by Janeth Kent
Useful list of commands for linux server management
List of checks that you can perform on a linux server to try and figure out why it keeps going down Disk Space: df -h (Make sure you have enough disk space) Memory: free -m (Check you're not out of memory) Processes / Load average top (shift + m) htop (Check for processes that are taking up a lot of…
Category : Networking 09-07-2013 by Janeth Kent
Predis: PHP Library for REDIS
Redis is an open source data structure server with an in-memory dataset that does much more than simple key/value storage thanks to its built-in data types. It was started in 2009 by Salvatore Sanfilippo and because of its popularity quickly grew, being chosen by big companies like VMware (who later hired…
Category : Programming 01-07-2013 by Janeth Kent
A List of Best Free SQL Injection Scanners and Tools
We’ve compiled a list of free SQL Injection Scanners we believe will be of a value to both web application developers and professional security auditors. Checking for SQL Injection vulnerabilities involves auditing your web applications and the best way to do it is by using automated SQL Injection Scanners. SQLbftools –…
Category : Databases 03-06-2013 by Janeth Kent
Setting the Hostname (FQDN) in Linux Servers
Here we will show how to set your system's hostname and fully qualified domain name (FQDN). Your hostname should be something unique. Some people name their servers after planets, philosophers, or animals. Note that the system's hostname has no relationship to websites or email services hosted on it, aside from providing…
Category : Networking 29-05-2013 by Janeth Kent
Million of visitors per day with a super cheap php mysql server using nginx and varnish
These instructions are the rather verbose, but hopefully easy enough to follow, steps to build a new Linux server using Varnish and Nginx to build a php application on a cheap server , all costing under $15 a month, capable of sustaining million hits per day, (we use blitz.io to…
Category : Networking 28-05-2013 by Janeth Kent
Memcache: Installation and Usage on Ubuntu 12.10
About Memcache Memcache is a system that works to speed up virtual private servers by caching server information. The program allows you to allocate a specific amount of the server ram toward caching recently queried data for a certain amount of time. Once the data is requested again, memcache speeds up…
Category : Databases 03-05-2013 by Janeth Kent
Mysql:Guide To The MySql Query Cache
MySQL “Query Cache” is quite helpful for MySQL Performance optimization tasks but there are number of things you need to know. First let me clarify what MySQL Query Cache is - I’ve seen number of people being confused, thinking MySQL Query Cache is the same as Oracle Query Cache - meaning…
Category : Databases 25-03-2020 by Janeth Kent
The First App-Controlled Bionic Hand
i-Limb Ultra Revolution with Biosim app Touch Bionics A new bionic hand is the first to come with app control, allowing users to access complicated motion patterns—like the grip needed to play pool or right-click a mouse—with a single touchscreen tap. i-Limb Ultra Revolution clicking mouse: Touch Bionics The i-Limb Ultra Revolution, which has four individually…
Category : News and events 26-04-2013 by Janeth Kent
Redis: installation and usage on Ubuntu/Debian
About Redis Redis, developed in 2009, is a flexible, open-source, key value data store. Following in the footsteps of other NoSQL databases, such as Cassandra, CouchDB, and MongoDB, Redis allows the user to store vast amounts of data without the limits of a relational database. Additionally, it has also been compared…
Category : Databases 01-07-2013 by Janeth Kent
How To Run Unity Next on Ubuntu 12.10
Unity Next, the next-generation Qt/QML version of Ubuntu’s Unity interface designed to intelligently adapt to multiple form factors, can now be tried, tested, and hacked-on right from the desktop. You’ll need to be running Ubuntu 12.10 and know your way around the command line to get it up and running. It’ll also help if you’re…
Category : Operating systems 11-04-2013 by Janeth Kent
5 tools for better PHP
When we work on our applications, whatever our language of choice, sometimes we can focus too much on the code itself. A really good development lifecycle is about so much more than the code, it brings in a selection of supporting tools to ensure quality and reliability of the application,…
Category : Programming 11-04-2013 by Janeth Kent
Install and Setup SSL in Webmin and Apache
SSL is a protocol for making secure, authenticated connections across an insecure network like the Internet. It encrypts network traffic, so that an attacker cannot listen in on the network and capture sensitive information such as passwords and credit card numbers. It allows servers to authenticate themselves to clients, so…
Category : Networking 11-04-2013 by Janeth Kent
PHP-MongoDB Beginners Guide
Over the last year or so, there's been a small revolution taking place in the database world, with the advent of "schema-less" database systems like Apache CouchDB. These databases follow a different approach to data storage as compared to the traditional relational model, and they're quickly becoming popular with Web…
Category : Databases 11-04-2013 by Janeth Kent
Distributed Storage Across Multiple Servers (Nodes) With GlusterFS 3.2.x On Ubuntu 12.10
This tutorial shows how to combine four single storage servers (running Ubuntu 11.10) to one large storage server (distributed storage) with GlusterFS. The client system (Ubuntu 11.10 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling…
Category : Operating systems 11-04-2013 by Janeth Kent
How to install LAMP (Linux,Apache,Mysql,Php) in Ubuntu 12.10
About LAMP LAMP stack is a group of open source software used to get web servers up and running. The acronym stands for Linux, Apache, MySQL, and PHP. Since the virtual private server is already running Ubuntu, the linux part is taken care of. Here is how to install the rest. Set…
Category : Networking 11-04-2013 by Janeth Kent
Enable SSH Secure Shell in Ubuntu 12.10
This brief tutorial shows you how to enable SSH in Ubuntu 12.04 Precise Pangolin. This request came in from one of our readers who wanted to know how to enable SSH in Ubuntu 12.04. As you may already know, SSH is a secure communication protocol that lets you remotely access…
Category : Networking 11-04-2013 by Janeth Kent
