[greg zakharov]

Код:

[Int32]$n = 0
[Console]::Write('Укажите число: ')
if ([Int32]::TryParse([Console]::ReadLine(), [ref]$n)) {
  [Console]::Write('Укажите имя: ')
  $s = [Console]::ReadLine()

  1..$n | % {
    $top = 'http://mysite.com/wp-content/uploads/'
  }{
    "$top{0:D4}$s-cover.jpg" -f $_
    "$top{0:D4}$s-tumble.jpg" -f $_
  } | Out-File links.txt -Enc ASCII
}