count-lines.ps1

$counts = @{".cs"=0;".js"=0;".xml"=0;".config"=0}
$excludeList = @()
Get-ChildItem -Recurse | % {
    $pathParts = $_.FullName.substring($pwd.path.Length + 1).split("\");
    if ( ! ($excludeList | where { $pathParts -like $_ } ) ) { $_ }
} |  
where { $_.FullName -ne $_.Directory -and $_.Extension -ne $null } | 
foreach-object -process { 
    try {
        if ($counts.ContainsKey($_.Extension)) {
            [int]$curr = [int]$counts.Get_Item($_.Extension);
            $add = [int]::Parse(([regex]'^\W*(\d+)').match((C:\bin\wc.exe -l $_.FullName)).groups[1].value);
            [console]::writeline("{0}:{1}+{2}", $_.FullName, $curr, $add)
            $counts.Set_Item($_.Extension, $curr + $add)
        }
    } catch {
        Write-Error $_.Exception.Message
    }
    
}

$counts | format-list