[FishMonger]

If you put some delimiters around each field's format specification, you'll be able to see more clearly the leading and trailing spaces between the fields. Based on that info, you should be able to see what adjustments you need to make.

See if this adjustment makes it more clear.

printf ("<%-8s> <%13.0f> <%-38s>\n", $original_line, $result, $user_folders);

You haven't clearly stated how the columns should line up, but Here's my test script which I think gives the output you desire.

#!/usr/bin/perl

use strict;
use warnings;

print <<'HEADER';
----------------------------------------------------------------------------------------------------------
domain\username    full name                 last access date       last access (days)     folder access
----------------------------------------------------------------------------------------------------------
HEADER

my $original_line = 'test\JOHN123       John Campbell             Fri 10-19-2012';
my $result = 59;
my $user_folders = 'EDITOR';

printf ("%-67s %-22.0f %-14s\n", $original_line, $result, $user_folders);

Outputs:

----------------------------------------------------------------------------------------------------------
domain\username    full name                 last access date       last access (days)     folder access
----------------------------------------------------------------------------------------------------------
test\JOHN123       John Campbell             Fri 10-19-2012         59                     EDITOR