Variable being overwritten in ForEach loop - Powershell - powershell

Question

I am trying to run the below code to import a list of directories from a .csv file (if chosen as a parameter) and then do a foreach loop to determined what files have been modified in the last XX days in the directories listed in the .csv file.
However it appears that the $modfiles variable is overwritten in each iteration as opposed to being appended.
The .csv being imported has 3 directories in it but my output only shows the relevant files from the last directory imported. Is their away to append $modfiles?
CSV Contents:
$importDirs = Import-Csv $importCsv
foreach ($importDir in $importDirs){
$modfiles = Get-ChildItem -Path $importDir.Directory -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.LastWriteTime -ge $modDate }
}
Output:
Here is the entire script:
[CmdletBinding(DefaultParameterSetName='ManualDirectory')]
param (
[Parameter(Mandatory = $true, ParameterSetName = 'ManualDirectory')]
[System.String]
$dir,
[Parameter(Mandatory = $true, ParameterSetName = 'ImportDirectory')]
[System.String]
$importCsv,
[Parameter(Mandatory=$true)]
[int]$days,
[switch]$exportCsv,
[switch]$console
)
Process {
#Clear-Host
$totSize = 0
$totFiles = 0
$modDate = (Get-date).AddDays(-$days).Date
If ($dir){
$modfiles = Get-ChildItem -Path $dir -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.LastWriteTime -ge $modDate }
}
If ($importCsv){
$importDirs = Import-Csv $importCsv
foreach ($importDir in $importDirs){
$modfiles = Get-ChildItem -Path $importDir.Directory -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.LastWriteTime -ge $modDate }
}
}
If ($exportCsv){
$modfiles | Select-Object -Property FullName, Length,LastWriteTime | Export-Csv -Path .\modFiles.csv -NoTypeInformation
}
foreach ($file in $modfiles){
$totFiles = $totFiles + 1
$totSize = $totSize + $file.Length
If ($console -eq $true){
Write-Host $file.FullName
}
}
If ($totSize -lt 1MB){
$outSize = $totSize/1KB
$unit = "KB"
}
elseif (($totSize -ge 1MB) -and ($totSize -lt 1GB)){
$outSize = $totSize/1MB
$unit = "MB"
}
elseif ($totSize -ge 1GB){
$outSize = $totSize/1GB
$unit = "GB"
}
$outRound = [math]::Round($outSize,2)
Write-Host $totFiles "Files"
Write-Host $outRound $unit
}

Answer 1

$importDirs = Import-Csv $importCsv
foreach ($importDir in $importDirs){
$modfiles = Get-ChildItem -Path $importDir.Directory -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.LastWriteTime -ge $modDate }
}
Each time you loop through $importDirs, you assign a value to $modfiles. Each iteration, you overwrite the values from previous iteration.
If you need to keep a list of all the values, append the data by using
$modfiles = $modfiles, (Get-Childitem ...)
# or
$modfiles += Get-ChildItem ...