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LFCS · Question #426

Which openssl command is used to inspect the information stored in a certificate?

The correct answer is A. x509. The openssl x509 command is the designated utility in OpenSSL for inspecting and managing X.509 certificates.

Submitted by marco_it· Apr 18, 2026Essential Commands

Question

Which openssl command is used to inspect the information stored in a certificate?

Options

  • Ax509
  • Bshow
  • Cinfo
  • Dreq

How the community answered

(22 responses)
  • A
    95% (21)
  • B
    5% (1)

Why each option

The `openssl x509` command is the designated utility in OpenSSL for inspecting and managing X.509 certificates.

Ax509Correct

The `openssl x509` command is specifically designed for operations related to X.509 certificates, including parsing, displaying, and converting them. It is used with various options (e.g., `-in`, `-text`, `-noout`) to extract and show the information stored within a certificate, such as subject, issuer, validity, and public key details.

Bshow

`show` is not a standard `openssl` subcommand for inspecting certificate details; it does not perform this function.

Cinfo

`info` is not a standard `openssl` subcommand for inspecting certificate details; it does not perform this function.

Dreq

`openssl req` is used for managing Certificate Signing Requests (CSRs), not for inspecting existing X.509 certificates.

Concept tested: OpenSSL certificate inspection command

Source: https://www.openssl.org/docs/manmaster/man1/x509.html

Topics

#openssl#certificates#security#command-line tools

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