How to convert bytes to GB inside of a text file

Question

I'm using a PS script to automate WSUS cleanup and then output the results to a text file which is then emailed to me.
The output for Diskspace Freed is displayed in bytes, I would like to convert this to GB, but I am having trouble getting this to work.
Here is what I was attempting to work with, but it is not working properly (the 2nd line). 
Get-WsusServer | Invoke-WsusServerCleanup -CleanupObsoleteUpdates -CleanupUnneededContentFiles | Out-File "C:\Users\USER1\Downloads\WSUS Cleanup Log\cleanup $(get-date -f MM-dd-yy).txt"
#(Get-Content "C:\Users\USER1\Downloads\WSUS Cleanup Log\cleanup $(get-date -f MM-dd-yy).txt") | ForEach-Object {$_."diskspace free" / 1MB} | Set-Content "C:\Users\USER1\Downloads\WSUS Cleanup Log\cleanup $(get-date -f MM-dd-yy).txt""C:\WSUS PS Script\cleanup $(get-date -f MM-dd-yy).txt"
Send-MailMessage -to [email protected] -Subject "WSUS Cleanup" -Attachments "C:\Users\USER1\Downloads\WSUS Cleanup Log\cleanup $(get-date -f MM-dd-yy).txt" -SmtpServer 192.X.X.X -from [email protected]

Answer 1

Hi Granite,
I've got to guess here - don't have a handy 2012R2 Wsus Server at hand and I'm extrapolating from the Technet Library's documentation example output for Invoke-WsusServerCleanup - but this is what I came up with:
$File = "C:\Users\USER1\Downloads\WSUS Cleanup Log\cleanup $(get-date -f MM-dd-yy).txt"
$Script = {
if ($_ -match "diskspace free")
$Bytes = ($_.Trim().Split(":") | Select -Last 1).Trim()
$String = ($_.Trim().Split(":") | Select -First 1).Trim() + ": "
$String += "{0:n3}" -f ($Bytes / 1GB)
$String += "GB"
$String
else { $_ }
Get-WsusServer | Invoke-WsusServerCleanup -CleanupObsoleteUpdates -CleanupUnneededContentFiles | ForEach-Object $script | Out-File $File
Send-MailMessage -to [email protected] -Subject "WSUS Cleanup" -Attachments $File -SmtpServer 192.X.X.X -from [email protected]
If this doesn't work out for you, please post the actual output of the Cleanup Command.
Cheers,
Fred
There's no place like 127.0.0.1
Thanks for the response, this is exactly what I was looking for!
The script ran with no errors. The output does show as GB, however since the script was already ran today there value is currently 0. I will test this again in a couple of days.