by Sai gowtham

How to get the length of an array in Bash

In this tutorial, we are going to learn about how to find the length of an array in Bash.

The length of an array means, the total number of elements present in the given array.

Getting the array length

To get the length of an array, we can use the {#array[@]} syntax in bash.

Here is an example:

arr=()
arr+=('pears')
arr+=('grapes')

echo ${#arr[@]}

Output:

2

The # in the above syntax calculates the array size, without hash # it just returns all elements in the array.

Css Tutorials & Demos

How rotate an image continuously in CSS

In this demo, we are going to learn about how to rotate an image continuously using the css animations.

How to create a Instagram login Page

In this demo, i will show you how to create a instagram login page using html and css.

How to create a pulse animation in CSS

In this demo, i will show you how to create a pulse animation using css.

Creating a snowfall animation using css and JavaScript

In this demo, i will show you how to create a snow fall animation using css and JavaScript.

Top Udemy Courses

JavaScript - The Complete Guide 2021 (Beginner + Advanced)
JavaScript - The Complete Guide 2021 (Beginner + Advanced)
64,026 students enrolled
52 hours of video content
View Course
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
284,472 students enrolled
40 hours of video content
View Course
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
152,857 students enrolled
48.5 hours of video content
View Course