Powershell Get-ChildItem - powershell

Question

I have a powershell script I wrote to check the contents of a folder and if there is a file with a LastWriteTime older than 20 minutes to notify me. The problem I am having is when I get the results it is including all of the files in the email body. How would I write this to get only the latest filename in the email body?
$src = 'c:\test'
$sendmail = $false
Get-ChildItem -path $src | ForEach-Object {
#write-host $_.fullname
$dtdiff = New-TimeSpan ($_.LastWriteTime) $(Get-Date)
if ($dtdiff.TotalMinutes -gt 20){
$strbody=$strbody +$_.fullname+ " Last File Modified at " +$_.LastWriteTime +"`r`n"
$sendmail=$true
}
}
#$strbody
if($sendmail -eq $true){
# Email components
$strFromAddress = "abc#xyz.net"
$strToAddress = "abc#xyz.net"
$strMessageSubject = "REPORT"
$strMessageBody = $strbody
$strSendingServer = "smtp.com"
$SMTPPort = "587"
$emailSmtpUser = "abc#xyz.net"
$emailSmtpPass = "test123"
# Email objects
$objSMTPMessage = New-Object System.Net.Mail.MailMessage $strFromAddress, $strToAddress, $strMessageSubject, $strMessageBody
$objSMTPClient = New-Object System.Net.Mail.SMTPClient( $strSendingServer, $SMTPPort )
$objSMTPClient.EnableSsl = $true
$objSMTPClient.Credentials = New-Object System.Net.NetworkCredential( $emailSmtpUser , $emailSmtpPass );
$objSMTPClient.Send($objSMTPMessage)
}

Answer 1

To get only the most actual file: Edited to remove flaw
Get-ChildItem -path $src |
Sort LastWriteTime |
Select -last 1 |
ForEach-Object {
#write-host $_.fullname
$dtdiff = New-TimeSpan ($_.LastWriteTime) $(Get-Date)
if ($dtdiff.TotalMinutes -gt 20){
$strbody=$strbody +$_.fullname+ " Last File Modified at " +$_.LastWriteTime +"`r`n"
$sendmail=$true
}
}

Answer 2

You're appending each filename and its associated timestamp to $strbody in that loop. It's doing exactly what you specified.
If you want only the latest file that was created in the last 20 minutes, change your get-childitem/foreach loop to this:
$mostrecentfile = get-childitem -path $src |
where-object {$_.lastwritetime -gt (get-date).addminutes(-20)} |
sort-object -property lastwritetime -descending | select-object -first 1
}
if ($mostrecentfile -ne $null) {
$strbody=$_.fullname+ " Last File Modified at " +$_.LastWriteTime;
$sendmail = $true;
}

Answer 3

get-childitem "c:\temp" -file | where LastWriteTime -le (Get-Date).AddMinutes(-20) |
Sort lastwritetime -descending |
% {
$strFromAddress = "abc#xyz.net"
$strToAddress = "abc#xyz.net"
$strMessageSubject = "REPORT"
$strMessageBody = "Last file modifed '{0}' at {1}" -f $_.fullname, $_.LastWriteTime
$strSendingServer = "smtp.com"
$SMTPPort = "587"
$emailSmtpUser = "abc#xyz.net"
$emailSmtpPass = "test123"
# Email objects
$objSMTPMessage = New-Object System.Net.Mail.MailMessage $strFromAddress, $strToAddress, $strMessageSubject, $strMessageBody
$objSMTPClient = New-Object System.Net.Mail.SMTPClient($strSendingServer, $SMTPPort )
$objSMTPClient.EnableSsl = $true
$objSMTPClient.Credentials = New-Object System.Net.NetworkCredential( $emailSmtpUser , $emailSmtpPass );
$objSMTPClient.Send($objSMTPMessage)
$objSMTPClient.Dispose()
break
}