Question : powershell Get-Acl to Set-Acl system date variable and output to file

Hi

I would appreciate any help on this current script I am testing (sourced in parts from EE and Google) pretty much working to how I require (script example pasted in).

I schedule the script to run daily and grab the ACL from a file and apply it to all files in a defined directory and this all works fine, it also sends an email just to let me know the script has at least run.

What I would like to do is:

1: use a system date variable to only apply the ACL change to files based on the current system date minus 1 day so that only the files with the date previous to the current day's system date have the ACL change applied
2: also if there is a way to output the files that have had the ACL applied sent to a .csv or .log file or even better attached/embedded in the email that is sent?

I have run some searches on EE and Google but cannot seem to find exactly what I am looking for.
I am just starting to look at powershell, so would appreciate any pointers/guidance on this request.

Here's the script example:

(script example START)
$acl = Get-Acl c:\TSTDIR\TD2.txt
$permission = domain\user,FullControl,Allow
$accessRule = New-Object System.Security.AccessControl.FileSystemAccessRule $permission
$acl.SetAccessRule($accessRule)
$acl | Set-Acl c:\TSTDIR\TSTSUB1\*.*
$SmtpClient = new-object system.net.mail.smtpClient
$MailMessage = New-Object system.net.mail.mailmessage
$SmtpClient.Host = "SMTP server"
$mailmessage.from = "[email protected] "
$mailmessage.To.add("user@domain.com ")
$mailmessage.Subject = ***TEST ACL reset complete TEST*** 
$mailmessage.Body = $(Get-Date -format g) 
$mailmessage.Headers.Add("message-id", "<3BD50098E401463AA228377848493927-1>")
$smtpclient.Send($mailmessage)
$mailmessage.IsBodyHtml = 1
(script example END)

Thanks in advance
Bry

Answer : powershell Get-Acl to Set-Acl system date variable and output to file

$FileNameTime = Get-Date -f yyyyMMddHHmm

$fileName = "WhateverYouWant-$FileNameTime"