killall cmd for PowerShell with completion

killall.ps1

# In a PS terminal, type "code $profile" and put this in there


function killall {
    param(
        [ArgumentCompleter(
            {
                param($cmd, $param, $values)
                get-process |
                    ? { $_.Name.StartsWith($values, [StringComparison]::OrdinalIgnoreCase) } |
                    select name -Unique |
                    % { $_.Name } |
                    sort
            }
        )]
        $ProcessName)
    stop-process -Name $ProcessName
}