convert to lowercase code example

Example 1: uruby to lower case

name = 'Foo'
puts name           # Ruby
puts name.downcase  # ruby
puts name.upcase    # RUBY
puts name           # Ruby

Example 2: tr lowercase uppercase

tr '[:lower:]' '[:upper:]'

Example 3: tolowercase

const sentence = 'The quick brown fox jumps over the lazy dog.';

console.log(sentence.toLowerCase());
// expected output: "the quick brown fox jumps over the lazy dog."

Example 4: convert to uppercase

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