Monday 22 March 2021

Project Overview: Automated Web Application Testing Framework

This project involves the development of an automated testing framework for a web-based application. The framework will be built using Python, Pytest, and the Selenium library. The application will be tested for functional, regression, and integration testing.

Project Plan:

Understanding the Requirements:

The first step is to understand the requirements of the web-based application that needs to be tested. This includes the user interface, functionalities, and the scope of the testing. Based on this, the testing scenarios will be created.

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Friday 19 March 2021

perl data structures tutorial - part1

Perl provides a rich set of data structures that can be used to store and manipulate data. In this tutorial, I'll cover the most commonly used data structures in Perl, along with code examples.

Arrays

Arrays are ordered lists of scalar values. To declare an array, you use the @ symbol followed by the array name. Here's an example:

@my_array = (1, 2, 3, 4, 5);


You can access individual elements of the array using the array name followed by the index of the element in square brackets. Here's an example:

print $my_array[0]; # prints 1


You can also use the scalar function to get the number of elements in an array:

print scalar(@my_array); # prints 5


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Wednesday 17 March 2021

A beginner's guide to building desktop applications with Python and PyQt

Python is a powerful programming language that is widely used for developing various types of applications, including desktop applications. One of the popular frameworks for building desktop applications with Python is PyQt. PyQt is a set of Python bindings for the Qt application framework and is used for creating graphical user interfaces (GUIs) for desktop applications. In this beginner's guide, we will explore how to build desktop applications with Python and PyQt.

Installing PyQt

Before we start building our desktop application, we need to install PyQt. PyQt can be installed using pip, the Python package manager. 

Open your terminal or command prompt and enter the following command:

pip install pyqt5


Once PyQt is installed, we are ready to build our first desktop application.

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Sunday 14 March 2021

How to setup firewall in Linux? - Iptables Tutorial

Hi, firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Linux firewall can be implemented using several tools such as iptables, UFW (Uncomplicated Firewall), firewalld, etc. In this tutorial, we will be focusing on iptables, which is the most commonly used firewall tool in Linux.

Step 1: Install iptables

In most Linux distributions, iptables is pre-installed by default. However, if it is not installed, you can install it using the following command:

sudo apt-get install iptables

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Tuesday 9 March 2021

Perl secure web services using API keys

To secure Perl web services using API keys, you can require clients to provide a unique API key in their requests to authenticate and authorize access to the web services. The API key can be generated and provided to authorized clients, and should be kept confidential.

Here's an example of how you can implement API key authentication for a Perl web service:

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Tuesday 2 March 2021

Top 10 Example of lsof commands in Linux and UNIX

In a Linux or UNIX operating system, there are many processes running simultaneously. These processes use files, sockets, and other resources that are managed by the operating system. To get information about these resources, we can use the "lsof" (list open files) command. Lsof is a powerful tool that can help us understand the system's state, monitor and debug applications, and troubleshoot issues. In this article, we will look at ten examples of using the lsof command in Linux and UNIX.

List all open files:

To list all the open files in the system, we can simply run the lsof command without any arguments. This will give us a comprehensive list of all the files and their corresponding processes.

lsof

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Monday 1 March 2021

Boost Your Python Code Performance: Tips for Optimizing with JIT Compilation and Profiling Tools

Python is a powerful language for scientific computing and data analysis, but it's also known for its slower execution speed compared to compiled languages like C++ and Java. However, there are ways to optimize Python code for better performance. In this article, we'll explore some tips and tricks for optimizing Python code, including using JIT (just-in-time) compilation and profiling tools.

Use JIT Compilation

One way to improve the performance of your Python code is to use JIT compilation. JIT compilation is a technique that dynamically compiles code at runtime, rather than ahead of time. This allows the interpreter to optimize the code based on the actual data that is being processed, resulting in faster execution.

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Top 10 best Books to Learn Java for C and C++ Programmer?

 Java is a popular programming language that has been around for over two decades. It is widely used in the industry and is a favorite among developers due to its simplicity, portability, and versatility. C and C++ programmers who are interested in learning Java may find the transition to be relatively straightforward, as Java shares some similarities with C and C++.

To aid in the process of learning Java, there are many books available that cater specifically to the needs of C and C++ programmers. These books cover a wide range of topics, including Java syntax, object-oriented programming, data structures, network programming, performance optimization, and more. In this context, we have listed the top 10 books that are recommended for C and C++ programmers who are looking to learn Java.

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