How to log IF statement in PowerShell? - powershell

Question

I made a logon PowerShell script to check files, if older than source then copy newer one to PC. I am trying to have the result logged but my log file is always empty. Where did I do wrong?
# Set Source
$S_P = "\\NETWORK\S_P.exe"
$S_T = "\\NETWORK\S_T.exe"
$S_P_Date = (Get-Item $S_P -ErrorAction SilentlyContinue).LastWriteTime.ToString("yyyy-MM-dd")
$S_T_Date = (Get-Item $S_T -ErrorAction SilentlyContinue).LastWriteTime.ToString("yyyy-MM-dd")
# Set Destination
$D_P = "C:\TEMP1\S_P.exe"
$D_T = "C:\TEMP2\S_T.exe"
$DF_P = "C:\TEMP1"
$DF_T = "C:\TEMP2"
$D_P_Date = (Get-Item $D_P -ErrorAction SilentlyContinue).LastWriteTime.ToString("yyyy-MM-dd")
$D_T_Date = (Get-Item $D_T -ErrorAction SilentlyContinue).LastWriteTime.ToString("yyyy-MM-dd")
$D_Log = "C:\TEMP\updated.txt"
# Compare date and Copy
function Check_Copy {
if (!(Test-Path $D_Log)) {New-Item $D_Log}
if ((Test-Path $D_P) -and (Test-Path $D_T)) {
if ($D_P_Date -le $S_P_Date) {Copy-Item $S_P $DF_P -Force}
if ($D_T_Date -le $S_T_Date) {Copy-Item $S_T $DF_T -Force}
} else {
Copy-Item $S_P $DF_P -Force
Copy-Item $S_T $DF_T -Force
}
}
Check_Copy | Out-File $D_Log -Append

Answer 1

You need to use the PassThru Parameter for the output to be piped out to your file. Otherwise, the output is hidden.
Simply add it to your Copy-Item lines so that it looks like this:
Copy-Item $S_P $DF_P -Force -PassThru
Copy-Item $S_T $DF_T -Force -PassThru
Read this TechNet blog to learn more about using object pass through in PowerShell.