Derived from: http://giantdorks.org/alain/shell-script-to-check-ssl-certificate-info-like-expiration-date-and-subject/
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August 29, 2015 14:17
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Command to get remote certificate info
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| openssl s_client -showcerts -connect example.com:443 < /dev/null | openssl x509 -noout -text -certopt no_header,no_version,no_serial,no_signame,no_pubkey,no_sigdump,no_aux |
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