[Foreigner]

AZABAZA,

Код:

$ofs = ''

if (test-path test.txt) { $a = [int][string](get-content test.txt)[-2..-1] }
else { $a = 0 }

$a++
if ($a -gt 12) { $a = 1 }

set-content test.txt $('pass0{0:d2}' -f $a)