红帽全球峰会7.4. Viewing the expiry date of a certificate in the CLI
You can use the command line (CLI) to view the expiry date of a certificate.
Procedure
Use the
opensslutility to open the file in a human-readable format:$ openssl x509 -noout -text -in ca.pem Certificate: Data: Version: 3 (0x2) Serial Number: 1 (0x1) Signature Algorithm: sha256WithRSAEncryption Issuer: O = IDM.EXAMPLE.COM, CN = Certificate Authority Validity Not Before: Oct 30 19:39:14 2017 GMT Not After : Oct 30 19:39:14 2037 GMT
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