CACLS: Displays or modifies access control lists (ACLs) of files.


 


... The examples for the command "CACLS"
... "CACLS" Excerpt from Microsoft Windows Help
... Important information, tips for the "CACLS" command

The command: "CACLS" is on Windows 11, 10, .. , MS Server 2025, 2022, 2019, .. available

The examples for the command "CACLS"

The `CACLS` command. `CACLS` (Change Access Control Lists) was used to manage access permissions to files and directories on Windows. However, note that the command has been replaced by `ICACLS` in newer versions of Windows to provide expanded functionality and improved control. Here are some examples with comments for the `ICACLS` command that replaced `CACLS`: Example 1: View access permissions for a file:

ICACLS file.txt

Description: This command displays the current access permissions for the file "File.txt". Example 2: Changing access permissions for a directory recursively:

ICACLS directory /grant user:(OI)(CI)M

Description: This command grants the user full access rights (`M` for Modify) to the directory directory and all files and subdirectories within it. Example 3: View access permissions for a folder, including inherited permissions:

ICACLS folder /inheritance:e

Description: This displays the access permissions for the Folder folder and all items within it, with inherited permissions also listed. Example 4: Changing access permissions for a file while taking ownership:

ICACLS file.txt /setowner user

Description: This command changes the access permissions for "File.txt" and assigns ownership of the file to the user. Example 5: Save and restore access permissions for a directory:

ICACLS directory /save permissions.txt
ICACLS OtherDirectory /restore permissions.txt

Description: This is where the access permissions for "Directory" are saved and then restored to "OtherDirectory". Please note that correct use of `ICACLS` or `CACLS` requires administrative privileges, and changes to privileges should be made with caution to avoid unwanted effects.

"CACLS" Excerpt from Microsoft Windows Help

Microsoft Windows [Version 10.0.19045.3693]
(c) Copyright 1985-2023 Microsoft Corp.

C:\\WINDOWS>

Displays or modifies access control lists (ACLs) of files

CACLS filename [/T] [/E] [/C] [/G user:perm] [/R user [...]]
               [/P user:perm [...]] [/D user [...]]
   filename      Displays ACLs.
   /T            Changes ACLs of specified files in
                 the current directory and all subdirectories.
   /E            Edit ACL instead of replacing it.
   /C            Continue on access denied errors.
   /G user:perm  Grant specified user access rights.
                 Perm can be: R  Read
                              W  Write
                              C  Change (write)
                              F  Full control
   /R user Revoke specified user's access rights (only valid with /E).
   /P user:perm  Replace specified user's access rights.
                 Perm can be: N  None
                              R  Read
                              W  Write
                              C  Change (write)
                              F  Full control
   /D user       Deny specified user access.
Wildcards can be used to specify more that one file in a command.
You can specify more than one user in a command.

Abbreviations:
   CI - Container Inherit.
        The ACE will be inherited by directories.
   OI - Object Inherit.
        The ACE will be inherited by files.
   IO - Inherit Only.
        The ACE does not apply to the current file/directory.

Important information, tips for the "CACLS" command

Yes, there are some important points and considerations that you should keep in mind when using the `ICACLS` or `CACLS` commands in the Windows Command Prompt: 1. Admin Rights: Changing access permissions requires administrator rights. Make sure you run Command Prompt as an administrator to access all features of `ICACLS` or `CACLS`. 2. Understanding the Syntax: The syntax of `ICACLS` and `CACLS` can be complex. Understand the correct order and use of parameters. You can view the help of the commands using `ICACLS /?` or `CACLS /?` for more information. 3. Caution when changing permissions: Adding or removing access permissions can have a significant impact on system functionality. Make sure you understand the intended changes and adjust permissions accordingly. 4. Backup: If you make major changes to access permissions, it is advisable to create a backup beforehand. This allows for recovery in case of problems. 5. Recursive Changes: When changing permissions on a directory that contains subdirectories and files, consider using the `/T` or `/inheritance:r` parameter to recursively apply the changes. 6. Ensuring Ownership: Sometimes permissions related to ownership need to be changed. `ICACLS` allows ownership to be changed using the `/setowner` parameter. 7. Control over inheritance: Understand how permission inheritance works (`/inheritance`) to ensure that desired access rights are transferred correctly to subdirectories and files. 8. Minimize Security Risks: Change permissions carefully and avoid habitually granting broad permissions. Unnecessary permissions can pose security risks. 9. Logging: If you make major changes to permissions, it is advisable to log the changes. This makes it easier to monitor and diagnose problems. 10. Note version dependencies: Note that `CACLS` has been replaced by `ICACLS` in newer Windows versions. Use `ICACLS` when available to benefit from advanced features. Before making any changes to access permissions, you should ensure that you understand the implications and ensure that the changes you make comply with your system's security policies and best practices.


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Windows-10


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Windows 10 How To


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The command CACLS - Displays or modifies access control lists (ACLs) of files.

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