InMicrosoft Windows,cacls, and its replacementicacls, are nativecommand-line utilities that can display and modify thesecurity descriptors onfiles andfolders.^[1][2] Anaccess-control list is a list of permissions for securable object, such as a file or folder, that controls who can access it. Thecacls command is also available onReactOS.

cacls
TheReactOScacls command
Developers	Microsoft, Thomas Weidenmueller
Initial release	1994, 31–32 years ago
Operating system	Microsoft Windows,ReactOS
Type	Command
License	Windows:Proprietarycommercial software ReactOS:GNU Lesser General Public License
Website	docs.microsoft.com/en-us/windows-server/administration/windows-commands/cacls

Thecacls.exe utility is a deprecated command line editor of directory and filesecurity descriptors inWindows NT 3.5 and later operating systems of theWindows NT family.^[3] Microsoft has produced the following newer utilities, some also subsequently deprecated, that offer enhancements to support changes introduced with version 3.0 of theNTFS filesystem:

• xcacls.exe^[4][5][6][7] is supported by Windows 2000 and later and adds new features like setting Execute, Delete and Take Ownership permissions
• xcacls.vbs^[8][9]
• fileacl.exe^[10]
• icacls.exe (included in Windows Server 2003 SP2 and later)^[11][12]
• SubInAcl.exe - Resource Kit utility to set and replace permissions on various type of objects including files, services and registry keys
• Windows PowerShell (Get-Acl^[13] and Set-Acl^[14] cmdlets)

TheReactOS version was developed by Thomas Weidenmueller and is licensed under theGNU Lesser General Public License.^[15]

Stands for Integrity Control Access Control List.^{[citation needed]}Windows Server 2003 Service Pack 2 and later includeicacls, an in-box command-line utility that can display, modify, backup and restore ACLs for files and folders, as well as to setintegrity levels and ownership in Vista and later versions.^[16] It is not a complete replacement forcacls, however. For example, it does not supportSecurity Descriptor Definition Language (SDDL) syntax directly via command line parameters (only via the /restore option).

• SetACL
• chmod
• takeown

Wikibooks has a book on the topic of:Guide to Windows Commands

• cacls | Microsoft Docs
• icacls | Microsoft Docs

• Windows commands
• ReactOS commands

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