How to Use Index Arrays in Bash

The Bash =~ operator allows us to match a regular expression against a string. Read this guide for further details.

A key value dictionary can be used in bash for various purposes like generating a passcode, performing arithmetic operation, and creating a database.

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.

It is also possible to make ready a new array dynamically without declaring it or extending a previously defined array to include further entries. Still, multidimensional arrays aren't supported by bash. Fortunately, multidimensional arrays can be simulated. This article explains the simulation of an array of arrays in a bash script.

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.

The set -x command is used in bash scripting to aid you in debugging and troubleshooting the scripts. It is difficult to develop a code that is error-free especially if it contains hundreds or thousands of lines. Linux provides various ways to debug bash script using set -x is one of them. This article is a brief tutorial on how to use set -x command in bash scripting.

This article shows you how to use the “read” command, one of the key commands in Bash scripting. Understanding the “read” command is key to making your code more interactive.

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.

The “wc” or the word count command in Bash is considered extremely useful as it helps in finding out various statistics of a file. This command can be used in multiple different variations. However, in this article, the basic usage of this command in Bash is explained.

In Bash, an array can be an indexed array or an associative array. An indexed array is a list whose items are numbered beginning from zero. An associative array is a list where strings have replaced the numbers. The programmer needs to know how to create the array. In this article, Bash Arrays are explained in-depth.

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 “cat” command in Bash stands for “concatenate”. This command is very frequently used for viewing, creating, and appending files in Linux. In this article, the usage of this command in Bash in Linux Mint 20 is explained with some examples.

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.

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.

A block of code or text which can be redirected to the command script or interactive program is called here document or HereDoc. Different types of scripting languages can take text input directly using here-document without using any text file. How to use Here Document in bash programming 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 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.