How to Use Bash =~ Regex to Match Multiple Strings

Index arrays in bash can be used to reorder a list, filter a list, count occurrences and for updating a list of items. Read this guide for more details.

In this article, we will explain how to use the Bash case statement with example in Linux OS. Bash case statements are similar to if-else statements but are easier and simpler.

The article will guide you in using F strings formatting syntax that can be added to recent version of Python. It is easy to read and use and it doesn’t depend on positional arguments and can keep the code clean.

The sed command of Ubuntu has longlist of supported operations that can be performed to ease the process of editing text files. The regex is used to manage text inside text files, with the help of regex a pattern which consists of string and these patterns are then used to match or locate the text. The regex is widely used in programming languages such as Python, Perl, Java and its support is also available for command line programs such as grep and several text editors too like sed. This article explains u

The modulo operator is widely known to determine the remainder of two values upon division. This mathematical operator can also be used in the bash script. How a modulo operator can be used in bash in different ways is explained in this article.

The Linux system contains many options to be set in it by a user. One of the very well-known and useful groups of commands is “Set builtin”. The Set Built-in has many flags to set any environment variables in Bash with its simple commands. How to use Set Builtin in Bash is explained in this article.

This article provides an easy step-by-step guide on how to use multiple delimiters in the AWK programming language. The instructions include an explanation of AWK and its benefits, the definition of the delimiters, and a sample case to show how to separate the multiple delimiters using the AWK Field Separator.

In Ubuntu, the “strings” command allows you to see all the human-readable characters present in a binary/executable file. The “strings" command is primarily used to determine the type of file, but it can also be utilized to extract text. you have a file saved in an unusual binary format; you can extract the text you entered in this file using the "strings” command without encountering non-printable characters. In this article, we will talk about how to install and use strings on your Ubuntu system. So, let’

While constantly working with files in Linux, sometimes, we may encounter instances where we need to append multiple lines to a file. The simplest way to append multiple lines to a file is to use the echo and printf command. Some various approaches to append multiple lines in a file with bash are discussed in this article.

The most common way to change file extensions recursively in a directory is to use a bash for loop. A for loop is the repetition of a process within a bash script. This article will discuss a quick way to rename files from a specific extension to another using Bash.

Bash comes with special variable features. Special variable features are used to control the Bash script’s execution flow. You can read their values but you can’t assign values to them. In this article, we will discuss and take you through the usages of 9 different special variables used in Bash.

Split is an integrated feature in many computer languages that divides every string of data into various pieces. A variable IFS (Internal Field Separator) is being used to specify a particular delimiter for string division. This guide will help you learn how to break a string value bash using $IFS.

The boolean value can contain two types of data. These are True or 1 and False or 0. Bash does not support Boolean values, but any bash variable can contain 0 or "true" and 1 or "false". The boolean value is required to use when the script needs to generate the output based on the True or False value of a variable. How to use boolean value in bash is explained in this article.

MongoDB provides support for partial match operators and is named as $regex in MongoDB. The $regex operator helps to match part of a value and then displays the result based on that partial tie. This article explains how the $regex operator works in MongoDB. General usage, syntax of $regex operator in MongoDB and how to use $regex operator with caret (^) and dollar ($) sign are also discussed in this guide.

We use multiple data using a single variable in any programming language. The list of data can be assigned and used using an array variable. If the index of an array is numeric, then it is called a numeric array, and if the index of an array is a string, it is called an associative array. How to use arrays in Bash is explained in this article.

The reader can easily understand each step of the script if the author properly comments on it. Comments are ignored when the script executes. The single line can be commented on very easily in the bash script. But there are multiple ways to comment on multiple lines in the bash script. How to use single and multiple line comments in BASH is explained in this article.

Using bash aliases, Ubuntu users can easily create shortcut commands of the large commands those are used frequently. Bash aliases not only make the task easier but also save the time of the users. The user can declare alias temporary or permanently. How to use bash aliases is explained in this article.

Variables in any programming language act as temporary storage spaces for keeping different types of data in them for processing. Bash itself detects the data type. A Bash script can be used to perform certain operations on your computer system. How to use Variables in Bash is explained in this article.

Software engineers are known to be responsible in making sure that their applications bug-free even before the public gets an access to it. However, this is not an easy feat. This article’s going to discuss how to use bash set -x option that can be useful for the said matter.

Bash && command can be used in multiple ways as it is a logical operator so you can use it in different conditional statements or it can be used to run multiple commands simultaneously. This is quite useful, especially If you're working on an immensely large project where you need to type numerous commands. Using && will make your Bash scripting concise and easy to understand. This article explains how to use && (AND) operator in Linux using different examples.

In this tutorial, we will show you how to use regular expressions (regex) with the `awk` command for several find and replace tasks.

Regular expressions or regex is a particular sequence of characters that utilizes a special syntax to assist in finding or matching strings or a set of strings. Regex is capable of searching, editing, and manipulating data and text. In this article, we’ll show you how to use regex in PowerShell.

In Bash, the set command allows you to manage certain flags and characteristics to influence how your scripts behave. These safeguards guarantee that your scripts are on the right track and that Bash's odd behavior does not cause problems. The set command can be used to change the operating parameters of the shell environment, allowing it to be customized in a better way that is not possible otherwise.

Variables are defined in a program to store specific types of data like integer, float, and strings. bash is a weakly typed language in which variables are not bound with a particular data type, therefore, no need to define any data type to the variable at the declaration time. Variables are quite easy to use but, if you don’t have a proper understanding of how they work then, you can easily get yourself in trouble. In this article, how to use Variables in Bash is explained.