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  • Web Server vs Application Server: What is the Difference?
    What is Server? A server is a central repository where data and computer programs are stored and accessed by the clients in the network. It helps you to manage network resources, provides shared services to connect workstations. It also allows you to shared data or hardware and software resources among…
  • Linux Tutorial PDF for Beginners: Basics Guide (FREE Download)
    $20.20 $9.99 for today 4.5 (119 ratings) Key Highlights of Linux Tutorial PDF 186+ pages eBook Designed for beginners Beautifully annotated screenshots You will get lifetime download access of this Linux Tutorial PDF Linux is the most popular server OS. Linux is a clone of UNIX. Knowing one is as…
  • 15 BEST Linux Books (2021 Update)
    We are reader supported and may earn a commission when you buy through links on our site Linux is an operating system based on UNIX and was first introduced by Linus Torvalds. It is based on the Linux Kernel and can run on different hardware platforms manufactured by Intel, MIPS,…
  • Top 50 Unix Interview Questions & Answers (2021 Update)
    1) What is UNIX? It is a portable operating system that is designed for both efficient multi-tasking and multi-user functions. Its portability allows it to run on different hardware platforms. It was written is C and lets users do processing and control under a shell. 2) What are filters? The…
  • Top 60 Linux Interview Questions and Answers (PDF) in 2021
    We have organized the most frequently asked Linux Interview Questions and Answers that help candidates to prepare for the Linux basic interview questions that an interviewer might ask you during your interview. In this list of interview questions on Linux, we have covered all commonly asked basic and advanced Linux…
  • Top 50 Shell Scripting Interview Questions & Answers (2021)
    1: What is a shell? Shell is an interface between the user and the kernel. Even though there can be only one kernel; a system can have many shell running simultaneously. So, whenever a user enters a command through the keyboard, the shell communicates with the kernel to execute it…
  • 7 Best Free TFTP Server for Windows (Nov 2021 List)
    Trivial File Transfer Protocol (TFTP) is used for small file transfers and does not require any authentication. TFTP is used to backup network, transfer files, and boot PCs without need of a disk. It uses UDP, which does not have error checking as TCP does. TFTP servers are mostly used…
  • 15 Best FREE SFTP Servers Software for Windows/Linux in 2021
    What is SFTP Server? SFTP Server is the last destination at the receiver’s end that provides secure file transfers during a message exchange over SSH (Secure Shell) to provide access to all the shell accounts on a remote SFTP server. The full form of SFTP is SSH File Transfer Protocol,…
  • 20 BEST FTP Clients for Windows & Mac in 2021 [Free/Paid]
    FTP clients are software designed specifically to transfer files between PC and servers over internet. These tools support protocols like FTP, SFTP, HTTP/HTTPS, and more. Many FTP clients have a drag and drop features in order to copy a file from one place to another. You can use these applications…
  • Linux Command Cheat Sheet
    In this Linux/Unix command line cheat sheet, you will learn: Basic Linux commands File Permission commands Environment Variables command User management commands of linux Networking command Process command VI Editing Commands Basic Linux commands Command Description ls Lists all files and directories in the present working directory ls-R Lists files…
  • Best Linux Certifications: RHCE, LPI, CompTIA, Linux Foundation
    Linux certifications are highly recommended by many companies as Linux gaining recognition by global platforms these days. These Linux exams certification programs are gaining popularity among data administrators, system admins, DevOps engineers. It helps IT, professionals, to get knowledge and recognition. In this Linux Certification Tutorial, you will learn: Why…
  • Crontab in Linux: Job Scheduling EXAMPLES
    What is crontab? Cron is named after Greek word “Chronos” that is used for time. It is a system process that will automatically perform tasks as per the specific schedule. It is a set of commands that are used for running regular scheduling tasks. Crontab stands for “cron table”. It…
  • Unix Vs. Linux: What’s the Difference Between Unix and Linux?
    What is UNIX? The UNIX OS was born in the late 1960s. AT&T Bell Labs released an operating system called Unix written in C, which allows quicker modification, acceptance, and portability. It began as a one-man project under the leadership of Ken Thompson of Bell Labs. It went on to…
  • Top 72 Perl Scripting Interview Questions and Answers (2021)
    Here is a curated list of Perl Scripting interview questions and answers for freshers and experienced candidates. These Perl interview questions are likely to be asked during your job interview or viva. These interview questions on Perl will help you easily crack your job interview. Perl Scripting Interview Questions Perl…
  • Linux User Commands Tutorial: Administration & Management
    As Linux is a multi-user operating system, there is a high need of an administrator, who can manage user accounts, their rights, and the overall system security for User management in Linux. You should know the basics of Linux admin so that you can handle the user accounts and usergroups…
  • Linux/Unix Virtual Terminal
    Linux is a multi-user system, which allows many users to work on it simultaneously. So what if different users need to work on the same system at a time? How do you do that? This is where we need the virtual terminals, let us learn about them. What are Virtual…
  • Shell Scripting Tutorial: How to Create Shell Script in Linux/Unix
    Shell Scripting Shell Scripting is an open-source computer program designed to be run by the Unix/Linux shell. Shell Scripting is a program to write a series of commands for the shell to execute. It can combine lengthy and repetitive sequences of commands into a single and simple script that can…
  • VI Editor with Commands in Linux/Unix Tutorial
    What is the VI editor? The VI editor is the most popular and classic text editor in the Linux family. Below, are some reasons which make it a widely used editor – 1) It is available in almost all Linux Distributions 2) It works the same across different platforms and…
  • Linux/Unix Process Management: ps, kill, top, df, free, nice Commands
    In this tutorial, you will learn- What is a Process? Running a Foreground Process Running a Background process Fg Top PS Kill NICE DF Free What is a Process? An instance of a program is called a Process. In simple terms, any command that you give to your Linux machine…
  • Telnet vs SSH: Key Differences
    What is Telnet? Telnet is the standard TCP/IP protocol for virtual terminal service. It enables you to establish a connection to a remote system in such a manner that it appears as a local system. The full form of TELNET is Terminal Network. Telnet protocol is mostly used by network…
  • Linux/Unix SSH, Ping, FTP, Telnet Communication Commands
    While working on a Linux operating system, you may need to communicate with other devices. For this, there are some basic utilities that you can make use of. These utilities can help you communicate with: networks, other Linux systems and remote users So, let us learn them one by one….
  • List of Environment Variables in Linux/Unix
    In this tutorial, you will learn- What is a Computing Environment? What is a Variable? What are Environment variables? Accessing Variable values Set New Environment Variables What is a Computing Environment? The Computing environment is the Platform(Platform = Operating System+ Processor) where a user can run programs. What is a…
  • Linux Regular Expression Tutorial: Grep Regex Example
    What are Linux Regular Expressions? Linux Regular Expressions are special characters which help search data and matching complex patterns. Regular expressions are shortened as ‘regexp’ or ‘regex’. They are used in many Linux programs like grep, bash, rename, sed, etc. Types of Regular expressions For ease of understanding let us…
  • Pipe, Grep and Sort Command in Linux/Unix with Examples
    In this tutorial, we will learn- What is a Pipe in Linux? ‘pg’ and ‘more’ commands The ‘grep’ command The ‘sort’ command What is a Filter? What is a Pipe in Linux? The Pipe is a command in Linux that lets you use two or more commands such that output…
  • Input Output Redirection in Linux/Unix Examples
    What is Redirection? Redirection is a feature in Linux such that when executing a command, you can change the standard input/output devices. The basic workflow of any Linux command is that it takes an input and give an output. The standard input (stdin) device is the keyboard. The standard output…
  • File Permissions in Linux/Unix: How to Read/Write & Change?
    Linux is a clone of UNIX, the multi-user operating system which can be accessed by many users simultaneously. Linux can also be used in mainframes and servers without any modifications. But this raises security concerns as an unsolicited or malign user can corrupt, change or remove crucial data. For effective…
  • 15 BEST cPanel Alternatives | Free & Paid (Nov 2021 Update)
    cPanel is one of the most famous web hosting control panel. It enables website owners to efficiently manage the website from a web-based interface in a single dashboard. However, cPanel has a new licensing policy which makes its very expensive for many resellers. Here is a curated list of top…
  • Basic Linux/Unix Commands with Examples and Syntax
    File Management becomes easy if you know the right basic command in Linux. Sometimes, commands are also referred as “programs” since whenever you run a command, it’s the corresponding program code, written for the command, which is being executed. Let’s learn the must know Linux basic commands with examples: Listing…
  • Linux Command Line Tutorial: Manipulate Terminal with CD Commands
    The most frequent tasks that you perform on your PC is creating, moving or deleting Files. Let’s look at various options for File Management. To manage your files, you can either use Terminal (Command Line Interface – CLI) File manager (Graphical User Interface -GUI) In this tutorial, you will learn-…
  • Linux vs Windows: What is the Difference Between Linux and Windows?
    It’s time to make the big switch from your Windows or Mac OS operating system. Mac OS uses a UNIX core. Your switch from Mac OS to Linux will be relatively smooth. It’s the Windows users who will need some adjusting. In this tutorial will introduce the Linux OS and…
  • Apache Solr Tutorial: What is Solr? Architecture and Installation
    What is Apache Solr? Apache Solr is an open-source search server platform written in Java language by Apache software foundation. It is highly scalable and ready to deploy search engine to handle a large volume of text-centric data. The purpose of using Apache Solr is to index and search large…
  • How to Download & Install Linux (Ubuntu) in Windows PC
    Now that we know what Linux is, it is the time that to learn how we should install it on the computer and choose which Distribution we should use. Let us start by understanding what a Linux Distribution is. In this tutorial, we will learn – What is a Linux…
  • What is Linux Operating System? Introduction to Linux OS
    What is Linux? LINUX is an operating system or a kernel distributed under an open-source license. Its functionality list is quite like UNIX. The kernel is a program at the heart of the Linux operating system that takes care of fundamental stuff, like letting hardware communicate with software. In this…
  • Perl Tutorial: Variable, Array, Hashes with Programming Example
    What is Perl? Perl is a high-level, general-purpose, interpreted, dynamic programming language. Perl is a term stands for “Practical Extraction and Reporting Language” even though there is no acronym for Perl. It was introduced by Larry Wall in 1987. Perl language was specially designed for text editing. But now, it…
  • Apache Tutorials for Beginners
    What is Apache? Apache is a remarkable piece of application software. It is the most widely used Web Server application in the world with more than 50% share in the commercial web server market. Apache is the most widely used Web Server application in Unix-like operating systems but can be…
  • UNIX / Linux Tutorial for Beginners: Learn Online in 7 days
    UNIX / Linux Tutorial Summary Linux is the most popular server OS. Linux is a clone of UNIX. Knowing one is as good as knowing the other. In this UNIX / Linux tutorial for beginners series, we will be using Linux as it’s freely available. The training will require you…