And what do you think about Text::Table (http://search.cpan.org/~anno/Text-Table-1.107/lib/Text/Table.pm)?
I like very much the ``perl old-school technique'' showed by robin, but using this module is even more simple ^_^ 
#!/usr/bin/perl -w
use Text::Table;
my @aoa = (
    [qw (GAL_up800.fasta  6  800  4.8)],
    [qw (hm01g.fasta  18  2008  36.144)],
    [qw (hm02r.fasta  9  1000  9)],
    [qw (train_muscle.fasta 7 50 0.35 )],
);

my $tb = Text::Table->new();
$tb->load(@aoa);
print $tb;

[download]
You create the object, load your table and print its out, the Text::Table will format and align the elements on the table for you ... 
GAL_up800.fasta     6  800  4.8  
hm01g.fasta        18 2008 36.144
hm02r.fasta         9 1000  9    
train_muscle.fasta  7   50  0.35

[download]
Cool isn't it?

perl -Te 'print map { chr((ord)-((10,20,2,7)$i++)) } split //,"turo"'

In reply to Re: About Tabbed Printing by turo
in thread About Tabbed Printing by monkfan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.