Helper for "gci ... | mtime x" PowerShell equivalent to "find ... -mtime x"

mtime.ps1

# this is one of Stéphane BARIZIEN's public domain scripts
# the most recent version can be found at:
# https://gist.github.com/sba923/0395f7fd716d87cf92d52946b10a30b7#file-mtime-ps1

[CmdletBinding()]
param (
    [Parameter(ValueFromPipeline)]
    $Item,
    [Parameter(Position=0)][int] $Days
)

Begin
{
    #TODO match find's rounding scheme (e.g. for -mtime 0's behavior)
    $timeboundary = [datetime]::Now.AddDays($Days)
}

Process {
    if ($Item.LastWriteTime -ge $timeboundary)
    {
        $Item
    }
}