apt install certbot nginx code example

Example 1: how to secure letsencrypt on ubuntu 20.04 with nginx

sudo apt install certbot python3-certbot-nginx

Example 2: lets encrypt nginx

#Once you have installed CertBot and Lets Encyrypt, 
#and you have set up your server blocks, 
#you will be able to run the below script in your terminal
sudo certbot --nginx -d example.com -d www.example.com