Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
VsFTP (Very Secure File Transfer Protocol) is a popular FTP server software used for transferring files over the internet. If you are applying for a job that requires knowledge of VsFTP, then it's essential to be familiar with the advanced concepts and technical questions that might arise during an interview. In this article, we will discuss some of the advanced VsFTP interview questions and their possible answers. What is VsFTP and Why is it Used? VsFTP is a secure FTP server software that allows users to transfer files over the internet. It provides a secure and efficient way to ... Read More
To set the PYTHONPATH environment variable on Linux, follow these steps − Open a terminal window on your Linux system. Determine the path to your Python module or package. For example, suppose you have a Python module named mymodule located in the /home/user/myproject folder. Set the PYTHONPATH environment variable to the path of your module or package using the following command − $export PYTHONPATH=/home/user/myproject:$ This command sets the PYTHONPATH environment variable to /home/user/myproject and also includes the previous value of PYTHONPATH in case it was already set. Note that the path should be separated by a colon (:) on Linux. Verify that the PYTHONPATH environment variable has been set correctly using the following command − ... Read More
Any character or group of characters that depicts horizontal or vertical space is known as whitespace. A whitespace character usually takes up space on a page even though it does not correspond to any visible mark when it is rendered. Pressing the spacebar will allow you to enter a whitespace character. On many keyboards, the Tab key can also be used to enter horizontal whitespace, although the length of the space may vary. Any spaces or tabs that follow the final non-whitespace character on the line until the newline are considered trailing whitespace. Whitespace in Python Whitespace is a type ... Read More
If you're a Linux user, you probably deal with file archives frequently. Whether you're sending files to someone, backing up data, or just organizing your files, compressing them into a single file archive can save a lot of space and make things easier to manage. One tool you can use for this purpose is 7zip. In this article, we'll cover 7zip command examples in Linux that you can use to compress and extract files in various ways. What is 7zip? 7zip is a free and open-source file archiver, similar to WinZip or WinRAR on Windows. It was developed by Igor ... Read More
If you are a Linux user, you may have heard of term "memory usage". Memory usage refers to amount of memory being used by your computer at any given time. It is an important metric to keep track of, as excessive memory usage can cause your system to slow down or even crash. Fortunately, Linux provides a built-in tool called "free" that allows you to check your system's memory usage. In this article, we will go over how to use "free" command to check memory usage in Linux. What is "free" Command? The "free" command is a built-in tool in ... Read More
Are you a Linux user who frequently works with video and audio files? If so, you'll want to learn about versatile avconv tool. Avconv is a command-line utility that can record, convert, and extract videos and audios from Linux terminals. In this article, we'll explore 10 different avconv commands that you can use to accomplish a variety of tasks. Record a Video The first avconv command we'll look at is how to record a video. This is useful when you need to capture a video of your screen or webcam. Here's command − avconv -f x11grab -s 1280x720 -i :0.0+0, ... Read More
The file systems ZFS (Zettabyte File System) and UFS (Unix File System) are both used in Unix-based operating systems. While both have been designed to manage and store data, they have numerous fundamental differences. ZFS is a modern file system that prioritizes data integrity and provides better levels of data protection and security through features such as checksumming, snapshots, and RAID-Z. UFS is an older file system developed in the early days of Unix that lacks some of ZFS's advanced features and scalability. Read this article to find out more about ZFS and UFS and how they are different from ... Read More
The World Geodetic System 1984 (WGS84) and the North American Datum 1983 (NAD83) are two geodetic coordinate reference systems used for position on the earth's surface. It is important to use the correct reference frame for a given application, as using the wrong one can result in significant positioning errors. WGS84 is the reference frame used by GPS devices, whereas NAD83 is used by mapping and surveying applications in North America. Read this article to find out more about WGS84 and NAD83 and how they are different from each other. What is WGS84? WGS 84 determines the Earth's orientation in ... Read More
WAV and WMA are both digital audio file formats. WAV is an abbreviation for Waveform Audio File Format, whereas WMA is an abbreviation for Windows Media Audio. Both of these file formats are used to store digital audio, but they differ in some ways. Read this article to find out more about WAV and WMA and how they are different from each other. What is WAV? WAV, or Waveform Audio File Format, is a common audio file format created by Microsoft and IBM in 1991. It is a common digital audio format for storing high- quality audio on personal computers. ... Read More
Voltage and amperage are both significant topics in electrical engineering. While they are related, they are relevant to different electrical circuit features. Voltage and current are two important electrical concepts. Voltage, measured in volts (V), is the potential difference between two points in a circuit that drives current flow. The flow of electric charge through a conductor is referred to as current, which is measured in amperes (A or amps). Read this article to find out more about Volt and Amp and how they are different from each other. What is Volt? Voltage is a fundamental term in electricity that ... Read More