Unix Permissions Calculator

Convert chmod octal (e.g. 755, 0644) to symbolic notation (rwxr-xr-x) and back. Classic rwx triplets. Runs in your browser.

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主な特徴とプライバシー保証

  • ✓ 100%ブラウザ内完結: データは端末外に出ず、外部サーバーに送信されることはありません。
  • ✓ リアルタイム高速出力: ネットワーク遅延ゼロ、入力と同時に即時反映・高速コピー。
  • ✓ 永久無料＆制限なし: 会員登録不要、課金なし、1日の利用制限も一切ありません。
  • ✓ 標準規格準拠: RFC、ISO、W3Cウェブ標準仕様に厳密に準拠して設計されています。

Free Online Unix Permissions Calculator

The Unix Permissions Calculator is a high-speed, privacy-first web utility in the Linux Tools suite designed to convert chmod octal (e.g. 755, 0644) to symbolic notation (rwxr-xr-x) and back. classic rwx triplets. runs in your browser directly in your browser without requiring software installations, browser extensions, or account registrations.

技術仕様とアーキテクチャ

Execution Environment:
100% Client-Side Browser Sandbox
Data Privacy:
Zero Server Storage / No Tracking
Processing Speed:
Real-time local CPU execution
Cross-Platform:
Works on Windows, macOS, Linux, iOS & Android

Local Processing for Linux Tools

This tool runs within your browser sandbox using modern Web APIs. Inputs are processed on your local device CPU, avoiding network latency and ensuring your data is never stored on external servers or accessible to third parties.

1

Provide Input

Enter, paste, or upload your data into the input field above.

2

Configure & Process

The tool immediately processes your input in real time according to your chosen settings.

3

Copy or Save

Use the Copy button to copy the output to your clipboard, or download the result to your device.

開発者メモ: All operations execute locally in your browser memory for maximum speed and data privacy.
Unix Permissions Calculator – Free Online Tool Screenshot
Unix Permissions Calculator インターフェース プレビュー

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Chmod Permission Calculator

Interactive visual rwx permission calculator, octal converter (755, 644, 777), SUID/SGID special bits, and chmod command builder.

よくある質問

How do I read chmod 755?
755 in octal means owner rwx (7), group r-x (5), others r-x (5). Symbolically: rwxr-xr-x. Common for executable scripts and directories.
What is the first digit in 4755?
The optional fourth octal digit sets special bits: 4 setuid, 2 setgid, 1 sticky. 4755 means setuid on the file plus rwxr-xr-x for the permission triplets.
Is my input uploaded?
No. All conversion runs locally in your browser.