39 results for: unix
How To Use Varnish As A Highly Available Load Balancer On Ubuntu 20.04 With SSL
Load balancing with high availability can be tough to set up. Fortunately, Varnish HTTP Cache server provides a dead simple highly available load balancer that will also work as a caching server. The modern use of SSL/TLS for all traffic has made this a little harder as Vanish has to handle…
Category : Servers 25-04-2021 by Janeth Kent
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
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
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
10 Open source tools for security operations (SOC)
As we know, there are many moving parts to building a Security Operations Centre (SOC). From a technological point of view, it is very important to count on open source to identify threats and reduce costs. From a DiD (Defense in Depth) point of view, there are many devices and…
Category : Security 29-11-2019 by Janeth Kent
Java 12, finally less verbose?
We all know Java for its characteristics thanks to which, despite more than 20 years have passed since the first version, it is still one of the most studied and most used languages, despite the growing diffusion of Python. However, one of the biggest flaws is the fact that it is…
Category : Java 10-10-2019 by Alessio Mungelli
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
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
How to Set up a Fully Functional Mail Server on Ubuntu 16.04 with iRedMail
Setting up your own mail server from scratch on Linux is complex and tedious, until you meet iRedMail. This tutorial is going to show you how you can easily and quickly set up a full-fledged mail server on Ubuntu 16.04 with iRedMail under 30 minutes. What is iRedMail? iRedMail is a shell…
Category : Networking 30-03-2023 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
Best Websites to Learn Coding Online
You know and we know that it’s totally possible to learn to code for free... If you can teach yourself how to write code, you gain a competitive edge over your peers, you can think more algorithmically and thus can tackle problems more efficiently. But what are the best resources to achieve…
Category : Programming 19-06-2018 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
PHP7: Install PHP7 with NGINX and MEMCACHE in Ubuntu 14.04
Let's install PHP7 and Nginx on a new Ubuntu 14.04 server, and manually build the (not yet packaged) memcached module for PHP7. Command Rundown Update: It looks like the php-memcached package was built into ppa:ondrej/php-php7.0 for php7, so the manual build steps is probably not necessary any longer! Install it via the…
Category : Servers 05-12-2018 by
PHP:How To Upgrade to PHP 7 on Ubuntu 14.04
Introduction PHP 7, which was released on December 3, 2015, promises substantial speed improvements over previous versions of the language, along with new features like scalar type hinting.This guide explains how to quickly upgrade an Apache or Nginx web server running PHP 5.x (any release) to PHP 7. Warning: As with…
Category : Operating systems 13-03-2016 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
Display Linux TCP / UDP Network and Socket Information with the 'ss' command
The ss command is used to show socket statistics. It can display stats for PACKET sockets, TCP sockets, UDP sockets, DCCP sockets, RAW sockets, Unix domain sockets, and more. It allows showing information similar to netstat command. It can display more TCP and state information than other tools. It is…
Category : Networking 23-05-2020 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
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
Tutorial: Introduction to PHP:PDO
Many PHP programmers learned how to access databases by using either the MySQL or MySQLi extensions. As of PHP 5.1, there’s a better way. PHP Data Objects (PDO) provide methods for prepared statements and working with objects that will make you far more productive! PDO Introduction “PDO – PHP Data Objects…
Category : Databases 15-10-2013 by Janeth Kent
10 Javascript Tutorials You Must See
Fortunately, we live in an era of global connectivity and access to many resources. Thanks to the Internet and people who enjoy sharing content, you can find almost everything you need to learn, and for free. Free tutorials, books and courses are easily found without spending too much. So if you…
Category : Javascript 10-09-2020 by Silvia Mazzetta
The best code editor for web developers
Every web developer requires the right tools to do their job, therefore the choice of a source code editor shouldn’t come lightly. This is where we spend most of our development time and where productivity is gained or lost on a grand scale. But which is the best Code Editor? To determine the best source code editor, we…
Category : Software 25-07-2013 by Janeth Kent
Setup and Manage Mysql/MysqlAdmin root password
Managing mysql main root password is one of the most common questions/problems that new linux users have, and one of the essential tasks. By defaultroot user is MySQL admin account. The Linux / UNIXlogin root account for your operating system and MySQL root aredifferent. They are separate and nothing to…
Category : Databases 18-07-2013 by Janeth Kent
How to Easily Install Hadoop in Ubuntu 12.10
This tutorial covers the installation steps of Apache Hadoop 1.0 and 2.0 in Ubuntu Linux. I will also go through the configuration for running it on pseudo-distributed mode. Pre-Requisites Java 6 or later (Hadoop is written in Java) Linux OS (Windows is supported only in development mode. Other flavors of…
Category : Databases 11-07-2013 by Janeth Kent
Top 15 Free Hacking Tools for Ethical Hackers
Intrusion tests, known as "Penetration Analysis" or "Ethical Hacking", are now a common practice to know the level of security a website has. These tests assess the type and extent of system and network vulnerabilities in terms of confidentiality and integrity. They check the security of the network and empirically verify…
Category : Security 19-06-2020 by Silvia Mazzetta
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
Syncronize Files Between Two Ubuntu Servers Using Unison and Incron
File Synchronization Between Two Ubuntu Servers using Unison Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating…
Category : Networking 21-06-2013 by Janeth Kent
Install and Configure Varnish with Apache multiple Virtual Hosts on Ubuntu 12.10
About Varnish Varnish is an HTTP accelerator and a useful tool for speeding up a server, especially during a times when there is high traffic to a site. It works by redirecting visitors to static pages whenever possible and only drawing on the virtual private server itself if there is a…
Category : Networking 21-06-2013 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
10 Front-end developer tools you can't live without
This article will provide a somewhat opinionated stance on what tools you should be using, along with a few alternatives for each category. So let’s get started with those essential tools. EDITORS Sublime Text 3 www.sublimetext.com/3 Sublime Text is a sophisticated text editor for code, markup and prose. You'll love the slick user interface,…
Category : Software 16-05-2013 by Janeth Kent
Linux 3.9 Released
After weeks of RC releases and a week's delay Linux 3.9, which packs a lot of new features, has finally been made available by Linus Torvalds. Last week Torvalds released the rc8 instead of the Linux 3.9 stating that he wasn’t “comfy” releasing the final version yet and that “another week won’t hurt”.…
Category : Operating systems 30-04-2013 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
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
A list of Great PHP libraries and classes you should know
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 are 24 of the coolest that I’ve come across. Your favorite is not on the list? Share it in…
Category : Programming 26-03-2021 by Janeth Kent
