> ## Content Index
> Fetch the complete content index at: https://www.albert-yu.com/llms.txt
> Use this file to discover other available public pages before exploring further.

# LINUX 權限意義
- URL: https://www.albert-yu.com/blog/linux-file-permissions/
- Published: 2017-03-19T16:11:38.000Z
- Updated: 2026-10-30T03:43:29.000Z
- Author: Albert Yu
- Tags: Linux/Unix, OS, Linux, Ubuntu, 權限, 資料夾

讀取 Read = R = 4  
寫入 Write = W = 2  
執行 eXecute = X = 1

Owner = 程式擁有人  
Group = 同一群組的其它帳號  
Other = 全世界，如訪客

(1) 如果您要開放檔案給任何人 "讀取"、並能 "寫入"，那麼：  
Owner (程式擁有人) = 4 + 2 + 0 = 6  
Group (同一群組) = 4 + 2 + 0 = 6  
Other (訪客) = 4 + 2 + 0 = 6  
所以 Owner Group Other = 666

(2) 如果您要開放檔案給任何人執行，自己可以更改檔案，但是不希望其它人更改您的檔案，那麼：  
Owner (程式擁有人) = 4 + 2 + 1 = 7  
Group (同一群組) = 4 + 0 + 1 = 5  
Other (訪客) = 4 + 0 + 1 = 5  
所以 Owner Group Other = 755