Retrieve SSL certificate information from provided hostname.
I just simply want to retrieve a website's SSL certificate information in my terminal.
$ go get github.com/tatthien/cert
For non-Go users
$ curl -sf https://gobinaries.com/tatthien/cert | sh
# Simply run cert hostname_1 hostname_2 hostname_3 ...
$ cert 12bit.vn github.com expired.badssl.com
# Example output
> 12bit.vn
This certificate is valid
Issued by: GTS CA 1D4
├── Org: Google Trust Services LLC
└── Country: US
Expires: Saturday, 25-Dec-21 02:45:49 UTC (2 months from now)
> github.com
This certificate is valid
Issued by: DigiCert High Assurance TLS Hybrid ECC SHA256 2020 CA1
├── Org: DigiCert, Inc.
└── Country: US
Expires: Wednesday, 30-Mar-22 23:59:59 UTC (5 months from now)
> expired.badssl.com
x509: certificate has expired or is not yet valid: current time 2021-10-04T21:42:36+07:00 is after 2015-04-12T23:59:59ZMIT © Thien Nguyen