What is Linux? [A Comprehensive Insight]
One needs to understand what Linux is if one wishes to become acquainted with Linux distributions. The beginner ought to …
How to Get the Length of an Array in Bash? [Complete Guide]
You can use the following methods to determine the length of an array in Bash: Using Length Expression ${#array[@]}: echo …
How to Install Ubuntu on VirtualBox [2 Methods]
VirtualBox is the world’s most popular open-source virtualization software. It allows you to create and run different virtual machines in …
How to Install Kali Linux [Step by Step]
Kali Linux is a distribution of Linux operating systems specially designed for cybersecurity tasks such as penetration testing, ethical hacking, …
How to Check If An Input Argument Exists in Bash [4 Methods]
When writing a bash script, it is a common task to check the input argument in bash to handle the …
Usages of “NOT (!)” Operator in Bash Scripting [4 Examples]
The “!“ (NOT) operator in Bash scripting is a logical operator used to invert the exit status of a command. …
Check If a Variable Exists in Bash Using If Statement
In Bash, the “if else” statement is used to control the flow of execution of the bash script statements. Within …
How to Install Ubuntu [Step by Step]
Ubuntu is a popular open-source Linux distribution based on Debian. It is very well known for its user-friendliness, community support, …
Introduction to Linux Operating System
Linux is a free, Unix-like operating system kernel that serves as the foundation for a wide variety of operating systems …
Declare Array in Bash [Create, Initialize]
Bash, a widely popular and powerful shell in the world of Linux, offers diversified ways to ensure efficient data management …
Linux OS Single Installation
In a Single OS Installation, you install a single operating system on your computer, and this OS is the only …
Usage of “OR” Operator in Bash Scripting [2 Cases]
Bash includes a range of logical operators that help to set multiple conditions within a bash script. Among these, the …
An Exhaustive Guide to Bash History Expansion
History expansion is a way to recall, modify and execute commands in the history list. Bash shell can remember a …
A Total Guide on Global Variable in Bash [3 Examples]
In Bash, every variable is global by default which means you can access it throughout the entire script. These global …
Check If a String Contains Substring, Number & Letter in Bash
Bash refers to the Bourne-again-shell, a popular script used in Unix-like operating systems such as Ubuntu. In bash, a string …
What is “$?” in the Bash if Statement? [8 Examples]
The $? is a special variable that holds the exit status of the last executed command in Bash. After executing …
Usage of Logical “AND (&&)” Operator in Bash Scripting
In some cases, you may need to combine several expressions to create conditions for the if and else sections of …
How to Pipe Output to File in Linux [4 Ways]
Redirecting the output of a command to a file through a pipe is a fundamental concept in command-line environments, like …
How to Multiply Variable in Bash [6+ Practical Examples]
To multiply variable in Bash, you can follow these steps: Firstly, initialize two variables. After that, multiply the two variables …
How to Read From Pipe in Bash [5 Cases]
Reading input interactively from the commands pipe is a common task in Bash scripting. In the case of collecting user …
