SSL
View the status of a websites certificate
$ openssl s_client -connect linuxhandbook.com:443 2>/dev/null | openssl x509 -noout -dates
notBefore=May 5 00:00:00 2022 GMT
notAfter=May 5 23:59:59 2023 GMT
$ openssl s_client -connect linuxhandbook.com:443 2>/dev/null | openssl x509 -noout -dates
notBefore=May 5 00:00:00 2022 GMT
notAfter=May 5 23:59:59 2023 GMT