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Access Control Lists


ACL stand for Access Control List (ACL) provides an additional, more flexible permission mechanism for file systems. It is designed to assist with UNIX file permissions. ACL allows you to give permissions for any user or group to any disc resource.

ACL is a listing containing one or more that tells a computer operating system or other network device what rights users have to each item on a computer or network device.Securing Access Control Lists

Syntax

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.
Examples
cacls myfile.txt
Displays the ACLs for the myfile.txt file. Below is an example of what this may look like.
C:\WINNT\MYFILE.TXT BUILTIN\Users:R
BUILTIN\Power Users:C
BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
cacls myfile.txt /e /g mrhope:f









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