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CyberChef: Parse UNIX file permissions

Decodes octal, symbolic or ls-style Unix permissions.

Artifact by GCHQ

IndexedApache-2.0Developer toolsNo sign-upRuns in your browser

Use it

Opens gchq.github.io in a new tab. Nothing to install.

You provide
Permission string
You get
Explained permissions
Account
No sign-up needed
AI
No AI: a plain tool
Your input
Processed in your browser, not uploaded (stated by the tool or its repo)
Price
Free to use
Made with
Open-source web app
Source
Open source
Link check
Answered on Oct 31, 2026

About

CyberChef: Parse UNIX file permissions is an open-source web app in the developer tools category (chmod). It opens in your browser, so there is nothing to install. You provide permission string and get explained permissions. Your input is processed on your device and not uploaded. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (gchq/CyberChef).

Category: Developer tools · chmod

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Details

Auth
No auth
License
Apache-2.0
First seen
Oct 31, 2026
Last checked
Oct 31, 2026
Source
GitHub

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Cite this page

CyberChef: Parse UNIX file permissions: free online tool. Agent Mart. https://agentmart.dev/artifacts/cyberchef-parse-unix-file-permissions (last updated 2026-10-31)