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chmod

Article Index
1. Name
2. Synopsis
3. Frequently used options
4. Basics
5. Examples
5.1. Octal Mode
5.2. Symbolic Specification

1. Name

chmod [man page] - change file access permissions

2. Synopsis

chmod [OPTION]... MODE[,MODE]... FILE...
 chmod [OPTION]... OCTAL-MODE FILE...
 chmod [OPTION]... --reference=RFILE FILE...

3. Frequently used options

-R, --recursive
      change files and directories recursively
-c, --changes
      like verbose but report only when a change is made
-v, --verbose
      output a diagnostic for every file processed

4. Basics

r : read (user can read the file, or list a given directory)
w : write (user can write to the file, or create file or directory in the directory)
x : execute (user can execute the file, or enter directory)