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calebcase/cert-check

Created August 8, 2018 12:40
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Basic check of domain's certificate status.
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cert-check
#!/bin/bash
set -euo pipefail
name=${1?You must set the DNS name to check.}
host=${2:-$1}
port=${3:-443}
# https://www.shellhacks.com/openssl-check-ssl-certificate-expiration-date/
echo | openssl s_client -servername "$name" -connect "$host":"$port" 2>/dev/null | openssl x509 -noout -subject -issuer -startdate -enddate -ocsp_uri -fingerprint -sha256
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