bash-ssl-checker-tool
Very simple bash script which you could use to gain general information for the SSL certificate of a certain domain name.
It is based on the functionality of the popular https://sslshopper.com website, but it's a command line tool.
The script has been tested on CentOS, Ubuntu, Mint and Debian.
The script provides you with the following information:
- The domain name that the SSL certificate has been issued for
- The number of days the SSL certificate expires in:
- The dates when the certificate was issued on and expires on
- The certificate has been issued by:
- Supported TLS versions
- Certificate Fingerprint
Usage:
In order to use the script just download the ssl file, make it executable and run it:
wget https://raw.githubusercontent.com/bobbyiliev/bash-ssl-checker-tool/master/ssl
chmod +x ssl
./ssl yourdomain.com
Output:
The output that you would get will look like this:
The bobbyiliev.com domain name seems valid
# The SSL certificate has been issued for:
Domain: CN = bobbyiliev.com
----
# The SSL certificate expires in:
90 days
----
# Dates:
Issued On: Jun 4 09:05:19 2020 GMT
Expires On: Sep 2 09:05:19 2020 GMT
----
# The certificate has been issued by:
Issuer: C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
----
# TLS supported:
| TLSv1.0:
| TLSv1.1:
| TLSv1.2:
----
# Fingerprint:
SHA1 Fingerprint=C1:E1:6C:46:8A:74:94:14:00:94:88:B9:4B:2B:C5:90:79:DE:72:64
----
Note: You need to have 'openssl' installed.
Blog post: https://bobbyiliev.com/blog/ssl-checker-terminal-tool