PowerShell Filters, Where-Object, Get-ChildItem - powershell

Question

I currently have the following script that im running in PowerShell. I want to get a list of files in the directory of where the PS script resides, i want all files where the lastmodifieddate is more than 30 days ago and then move them. Im not sure what im doing wrong here.
param (
[Parameter(Mandatory=$true)][string]$destinationRoot
)
$path = (Get-Item -Path ".\").FullName
Get-ChildItem $path\* -Include *.xlsx|
Where-Object {$_.LastWriteTime -lt (Get-Date).AddDays(-30)}
Foreach-Object {
$content = $path + "\" + $_.Name
$year = (Get-Item $content).LastWriteTime.year.ToString()
$monthNumber = (Get-Item $content).LastWriteTime.month
$month = (Get-Culture).DateTimeFormat.GetMonthName($monthNumber)
$destination = $destinationRoot + "\" + $year + "\" + $month
New-Item -ItemType Directory -Force -Path $destination
Move-Item -Path $content -Destination $destination -force
}

Answer 1

I use -f for format string
Not necessary to use $path
Use -File to exclude directory and -Filter for filter extension
You can rectify your code like this :
param (
[Parameter(Mandatory=$true)][string]$destinationRoot
)
Get-ChildItem -File -Filter "*.xlsx" | Where LastWriteTime -lt (Get-Date).AddDays(-10) | %{
$destination= "{0}\{1:yyyy\\MMMM}" -f $destinationRoot, $_.LastWriteTime
New-Item -ItemType Directory -Force -Path $destination
Move-Item $_.FullName -Destination $destination -Force
}