[DJ Mogarych]

Код:

$file = "C:\temp\1.txt"
$names = "C:\temp\2.txt"

$equals = [System.Collections.ArrayList]::new()
$notEquals = [System.Collections.ArrayList]::new()
[io.file]::readalllines("$file") |% {
    if (($str = $_.split(' | ') -match '\w' |group {$_ -replace '\.\w+$'})[0].Count -eq 1) {
        $notEquals.add($_) > $null 
    }
    else {
        $equals.add($($str.name -replace '.*/' -replace '$','*')) > $null        
    }
}

$notEquals |Out-File $file -Encoding default
$equals -join ';' |Out-File $names -Encoding default