How to forcefully renew Let's Encrypt certificate

Originally published at: https://www.cyberciti.biz/faq/how-to-forcefully-renew-lets-encrypt-certificate/

Forcefully renew Letsencrypt certificate for Nginx and Apache web server
How do I forcefully renew the Letsencrypt certificate on an Ubuntu, Debian, CentOS, RHEL, Fedora, or FreeBSD Unix systems?