Bash Functions,Defining Bash Functions

Bash Functions,Defining Bash Functions

A Bash function is essentially a set of commands that can be called numerous times. The purpose of a function is to help you make your bash scripts more readable and to avoid writing the same repeatedly.

A Bash function is essentially a set of commands that can be called numerous times. The purpose of a function is to help you make your bash scripts more readable and to avoid writing the same code repeatedly. Compared to most programming languages, Bash functions are somewhat limited.

In this tutorial, we will cover the basics of Bash functions and show you how to use them in your shell scripts.

Defining Bash Functions

The syntax for declaring a bash function is straightforward. Functions may be declared in two different formats:

  1. The first format starts with the function name, followed by parentheses. This is the preferred and more used format.
function_name () {
  commands
}
  1. Copy
  2. Single line version:
function_name () { commands; }
  1. Copy
  2. The second format starts with the reserved word function, followed by the function name.
function function_name {
  commands
}
  1. Copy
  2. Single line version:
function function_name { commands; }
  1. Copy

bash defining bash functions

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Import functions and variables into Bash with the source command

When you log into a Linux shell, you inherit a specific working environment. An environment, in the context of a shell, means that there are certain variables already set for you, which ensures your commands work as intended. For instance, the PATH environment variable defines where your shell looks for commands. Without it, nearly everything you try to do in Bash would fail with a command not found error.

Activation Functions, Optimization Techniques, and Loss Functions

Activation Functions, Optimization Techniques, and Loss Functions: A significant piece of a neural system Activation function is numerical conditions that decide the yield of a neural system.

How to Define Main Functions in Python

Python is a very interesting programming language to learn. In programming languages, when an operating system runs a program, a special function called main() is executed automatically.

Bash Select (Make Menus) and Bash select Example

In this tutorial, we will cover the basics of the select construct in Bash. The select construct generates a menu from a list of items. It has almost the same syntax as for loop.If the user enters a number that corresponds to the number of one of the displayed items, then the value of [ITEM] is set to that item. The value of the selected item is stored in the variable REPLY. Otherwise, if the user input is empty, the prompt and the menu list are displayed again.

Function Expression vs Function Declaration in JavaScript

In this article, we will acquaint ourselves with three simple terms: function declaration, function expression, and hoisting.