chmod function for PowerShell - shell

Question

I was looking around to understand how to chmod (change permissions of a file) a file on Windows 7 Power Shell. So I have found different (wired for me, because I am used to simple chmod command) code snippets and wondering would't it be simple to wrap that wired commands in a chmod function and write it on in a $profile file of Power Shell. I guess this is what many ex-linux shell, but now power shell users would like to have for changing permissions of a file.
I am new to Power Shell. Please help me with the code.

Answer 1

Here is an example with the native way, using ACL and ACE. You have to build your own functions arround that.
# Get the Access Control List from the file
# Be careful $acl is more a security descriptor with more information than ACL
$acl = Get-Acl "c:\temp\test.txt"
# Show here how to refer to useful enumerate values (see MSDN)
$Right = [System.Security.AccessControl.FileSystemRights]::FullControl
$Control = [System.Security.AccessControl.AccessControlType]::Allow
# Build the Access Control Entry ACE
# Be careful you need to replace "everybody" by the user or group you want to add rights to
$ace = New-Object System.Security.AccessControl.FileSystemAccessRule ("everybody", $Right, $Control)
# Add ACE to ACL
$acl.AddAccessRule($ace)
# Put ACL to the file
Set-Acl "c:\temp\test.txt" $acl
(Get-Acl "c:\temp\test.txt").access
Read-Host "--------- Test Here --------------"
# Remove ACE from ACL
$acl.RemoveAccessRule($ace)
Set-Acl "c:\temp\test.txt" $acl
(Get-Acl "c:\temp\test.txt").access

Answer 2

Look at the following:
Set-Acl - Run Get-Help Set-Acl -Full
attrib.exe - Standard Windows tool for setting file attributes. Not Powershell-specific, but of course still works in Powershell.
icacls.exe - Standard Windows tool for setting ACLs. Not Powershell-specific, but of course still works in Powershell.
Source: http://www.cs.wright.edu/~pmateti/Courses/233/Labs/Scripting/bashVsPowerShellTable.html
Just do a web search for chmod powershell.