How to Setup SSH Passwordless Login in Linux [3 Easy Steps]
SSH (Secure SHELL) is an open-source and most trusted network protocol that is used to log in to remote servers for the execution of commands and programs. It is also …
Bash Scripting – Variables Explained With Examples
Variables are very important concepts in any programming language you work with. Think of a variable as a container in memory that stores data of a certain type. The main …
Bash Redirection Explained With Examples
Redirection and piping are two useful features in bash scripting that sysadmins and developers use often. In this guide, we will discuss what is Bash Redirection and how to work …
How to find and replace ALL IP addresses with a new one
At a certain point, I needed to change the VLAN IP address such as 172.0.0.2 with 172.0.0.1 for ease of use. As you know, Linux and Unix-like operating system stores …
How to repeat a character ‘n’ times in Bash
Let us say you want to repeat a character such as ‘-‘ OR ‘=‘ multiple times while writing bash script. Please note that I needed a quick script to work …
How to Use Break and Continue Statements in Shell Scripts
In this article, we will take a look at how to use a break and continue in bash scripts. In bash, we have three main loop constructs (for, while, until). …
How to Use until Loop in Your Shell Scripts
In bash for, while, and until are three loop constructs. While each loop differs syntactically and functionally their purpose is to iterate over a block of code when a certain …
Different Ways to Read File in Bash Script Using While Loop
This article is all about how to read files in bash scripts using a while loop. Reading a file is a common operation in programming. You should be familiar with …
How to Use Heredoc in Shell Scripting
Here document (Heredoc) is an input or file stream literal that is treated as a special block of code. This block of code will be passed to a command for …
How to check if file does not exist in Bash
Author: Vivek Gite Last updated: February 27, 2021 Like