Powershell-Training/6.File_Management/File Management with PowerShell.md

File Management with PowerShell

Get-ChildItem

Get the content of a curent directory Alias = ls

Get-ChildItem

Get-ChildItem C:\Windows

Set-Location

Change current directory Alias = cd

Set-Location

ACL

Windows Access Control Lists (ACLs) are a core security mechanism used to control access to files, folders, and other system objects. An ACL defines which users or groups are allowed or denied specific permissions, such as read, write, modify, or execute. Each ACL is made up of Access Control Entries (ACEs) that explicitly grant or restrict these permissions. By using ACLs, Windows ensures that only authorized users can access or modify resources, helping to protect system integrity and sensitive data.

Get-Acl

for listing permision for a file

Get-ACL "C:\mrsh\test.ps1"

$file = Get-ACL 

$file.Access

Get-ACL "C:\mrsh\test.ps1" | Format-List

Set-ACL

$acl = Get-Acl "C:\mrsh\test.ps1"
$permission = "Administrator", "FullControl", "Allow"
$accessRule = New=Object System.Security.AccessControl.FileSystemAccessRule $permission
$acl.SetAccessRule($accessRule)

Set-ACL "C:\mrsh\test.ps1" $acl

File size

$fileSize = Get-ChildItem -Path "C:\mrsh\test.ps1" -Recurse -Force | Measure-Object -Property Length -Sum

$fileSize.Sum/1KB