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Linux · Linux and Bash

sha256sum

Calculate a SHA-256 checksum.

Copy-ready commandsha256sum
sha256sum installer.iso

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 example

Calculate a SHA-256 checksum.

sha256sum installer.iso

Common errors

Command not found

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