Vista Tutorial - add an empty line to txt file every two rows.

Hi guys. I've a txt file like this

line1
line2
...

line n

and so on

I need to create a new file adding an empty line every two rows

line1
line2

line3
line4

line5

I wrote this code:

$i=0; gc myfile.txt | % {$i=$i++; if($i%2 -eq 0) {add-content newfile.txt $_} else {add-content newfile.txt `n,$_}}

but the file remains the same. Where's my mistake? Thanks in advance.

I spent an hour looking for a solution. Now that I posted finally I found it.

$i=1; gc myfile.txt | % {if($i%2 -ne 0) {add-content newfile.txt $_} else {add-content newfile.txt $_,`r};$i++}

Thanks the same. Have a nice day!

Shorter version:
# insert NL every 2 lines
sc new.txt (gc old.txt | % {$l = 1} {if ($l++ % 2) {$_} else {$_,''}})

--
Kiron

Great solution Kiron! Thank you very much.