How to uppercase all letters of a string in Bash

In this tutorial, we will learn how to uppercase all letters of a string in Bash.

Uppercase the string

To uppercase the string, we can use the double carets ^^ symbol in Bash.

Here is an example, that converts the lowercase string 'lara' to uppercase:

name='lara'
uppercase=${name^^}

echo $uppercase

Output:

"LARA"