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This article explores methods to send data to another logged in user in Bash. This article discusses methods to find active users and send them messages. Finding Online Users in Bash Before sending data to an online user, you must verify wh...

This article explores regular expressions, their basic syntax, and how to run them in Bash using case and if-else constructs. Introduction to Regular Expressions A regular expression, also called regex or regexp, is a sequence of characters...

In this article, we will learn how to change directories in Bash. The term directory is used to refer to a folder. Because you frequently move between folders when using Bash and when using the Git version control system, it is essential to...

Finding a directory is very easy through Bash scripting. But finding the exact directory folder name you are in right now is a bit complicated. This article will introduce three methods to find the folder name from this article directory. I...

In this article, we will learn about Bash history, its size, and how we can change our history size and handle limits. Before getting into our topic, let us first understand why we need history in Bash shell and how we can get it. Most deve...

There are various ways to get network details in Linux. We will learn some of them in this article. This simple guide is all about using different commands that can be used to get the primary IP address in Linux operating system using Bash...

Suppose you have a file, a large file, and you want to display its contents. How would you do it? You obviously don't want to print out the entire contents of the file, as that's not very practical. You might want to print some selective li...

Sometimes, we need to put the entire contents of a file into a variable for various purposes, such as finding specific data from a file, replacing a specific part of a file, etc. In Batch, it is very easy to put the entire file contents in...

In batch files, variables containing multiple words or spaces must be placed in double quotes, but sometimes, we do not want to see these quotes in the output. These quotes can be removed from the variables in batch files. There are many wa...

A string is an ordered collection of characters. You can compare strings using conditional commands in batch files, namely, if, if-else, and for commands. Strings may contain spaces and special characters, which can cause errors in the batc...

This article discusses methods for checking Bash scripts for syntax problems without running the script. Syntax errors are caused by some grammatical or spelling mistakes in the code. In modern compilers of other programming languages, the...

In various situations when using Bash or another shell, you may need to run a script or program in a new terminal instance or in another tab in the same terminal. Opening a new terminal instance or tab from within Terminal is simple; we'll...

This article is a simple guide to setting a timeout for a specific program using the timeout command from GNU's coreutils package in Bash. timeout command in Bash In many cases, such as fetching data from a server or running a function or p...

This article provides a brief introduction to Bash scripting and discusses exiting a Bash script when an error occurs. It further discusses the limitations and benefits of Bash scripting. What is Bash Scripting A computer script/program tel...

This article is about using strings as commands in Bash scripts. For this purpose, the eval command is used. Eval Command in Bash Scripts In some Bash scripts, you have to create a string using variables or input values ​​(for example)...