openssl x509 — Basic UsageIT technician command center
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openssl x509 — Basic Usage

Use openssl x509 for a standard administrative task.

Copy-ready commandopenssl x509 — Basic Usage
openssl x509 -in cert.pem -noout -text

Requirements and permissions

Requirements
Linux with the referenced utility installed
Permissions
Use sudo or root only when required
Last reviewed
2026-07-31

Examples

Basic Usage

Use openssl x509 for a standard administrative task.

openssl x509 -in cert.pem -noout -text

Original command

Display certificate details.

openssl x509 -in cert.pem -noout -text

Common errors

Command not found

Confirm Linux with the referenced utility installed is installed and available in your current shell.