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Tom Utilities

Chmod 計算ツール

開発者ユーティリティ

読み取り・書き込み・実行の権限を、所有者・グループ・その他の chmod 8 進数と記号表記に変換します。

使い方

Reading permission bits

Read is 4, write is 2 and execute is 1. The three digits stand for owner, group and others, so 755 gives the owner full access and read plus execute for everyone else.

  1. Tick the permissions for each group.
  2. Read the octal and symbolic result.
  3. Copy the chmod command into your terminal.

よくある質問

What is 777?

Read, write and execute for everyone. It is usually a security risk on a web server.

What does a leading fourth digit mean?

The optional fourth digit sets setuid, setgid and sticky bits. This calculator covers the three permission digits.