JAVASCRIPT

string uppercase

let txt = "Hello World!";
txt = txt.toUpperCase();

convert string to uppercase

function changeToUpperCase(founder) {
  return founder.toUpperCase();
}

// calling the function 
const result = changeToUpperCase("Quincy Larson");

// printing the result to the console
console.log(result);

// Output: QUINCY LARSON

string to uppercase

const upperCase = function(names){
    const toLower = names.toLowerCase().split(' ');
    const namesUpper = [];
    for(const wordName of toLower){
        namesUpper.push(wordName[0].toUpperCase() + wordName.slice(1));
    }
    return namesUpper.join(' ');
}

convert to uppercase

echo example | awk -F 'd' '{ print toupper($1)}'
EXAMPLE		#Example first uppercased outputed