3.4 KiB
Get-NTFSAccess
Returns a list of all access control entries found on the given object(s).
#Get permissions from all files or folders in the current folder
dir | Get-NTFSAccess
#to read the permissions of a specific file
Get-NTFSAccess -Path C:\Windows
Get permissions from all files or folders in the current folder
dir | Get-NTFSAccess
To read and also remove only the explicitly assigned ones
dir | Get-NTFSAccess -ExcludeInherited | Remove-NTFSAccess
The pipeline support can also be used to backup and restore permissions of one or many items: PowerShell
To backup permissions just pipe what Get-NTFSAccess returns to Export-Csv
dir | Get-NTFSAccess -ExcludeInherited | Export-Csv permissions.csv
To retore the permissions pipe the imported data to Get-NTFSAccess
As the imported data also contains the path you do not need to specify the item
Import-Csv .\permissions.csv | Get-NTFSAccess
All cmdlets can handle SIDs and also SamAccountNames. The output contains always both unless a SID is not resolvable. The types.ps1xml file is extending the common objects with some useful information and the format.ps1xml file formats all the output in almost the same way like the Get-ChildItem output.
By implementing the [Process Privilege http://processprivileges.codeplex.com/] project the cmdlets can activate the required privileges for setting the ownership for example.
Add-NTFSAccess
Adds a specific ace to the current object. This can be done in just one line:
Get-Item .\VMWare | Add-NTFSAccess -Account Contoso\JohnD -AccessRights FullControl
Get-NTFSAccess
Gives you a list of all permissions . normally you are interested not in the inherited permissions so the switch ExcludeInherited can be useful
Get-Item F:\backup | Get-NTFSAccess –ExcludeInherited
Filtering works with Where-Object
Get-Item F:\backup | Get-NTFSAccess | Where-Object { $_.ID -like "*users*" }
Get-NTFS Orphaned Access
Lists all permissions that can no longer be resolved. This normally happens if the account is no longer available so the permissions show up as a SID and not as an account name.
To remove all non-resolvable or orphaned permissions you can use the following line. But be very careful with that as maybe the account is not resolvable due to a network problem.
dir -Recurse | Get-NTFSOrphanedAccess | Remove-NTFSAccess
Remove- NTFSAccess
Removes the permission for a certain account. As the pipeline is supported it takes also ACEs coming from Get-NTFSAccess or Get-NTFSOrphanedAccess
Get-NTFSEffectiveAccess
Shows the permissions an account actually has on a file or folder. If no parameter is specified it shows the effective permissions for the current user. However you can supply a user by using the SID or account name PowerShell
Get-Item F:\backup | Get-NTFSEffectiveAccess -Account S-1-5-32-545
Get-NTFSInheritance
Shows if inheritance is blocked
Enable-NTFSInheritance
It can be a problem if certain files or folders on a volume have inheritance disabled. Making sure that inheritance is enabled can be done using this cmdlets:
Get-Item .\Data -Recurse | Enable-NTFSAccessInheritance
Disable-NTFSInheritance
See Enable-NTFSInheritance
Get-NTFSOwner
Shows the owner of a file or folder
dir -Recurse | Get-NTFSOwner
Set-NTFSOwner
Sets the owner to a specific account like:
Get-Item .\Data | Set-NTFSOwner -Account builtin\administrators