Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

You mentioned portability was a requirement, so you should use File::Spec to build paths. "/" is not the file seperator on Macs, for example.

I have a script that needs to determine the oldest file in a particular directory

If all you're concerned about is which file is the oldest, there's no need to sort:

sub get_oldest { my ($dir) = @_; my $oldest; my $oldest_time; my $file_spec = File::Spec->catfile($dir, '*.pl'); foreach (glob $file_spec") { my $time = (stat $_)[10]; if (!$oldest_time || $time < $oldest_time) { $oldest = $_; $oldest_time = $time; } } return $oldest; }

I don't know how efficient glob is. You can get rid of it:

use DirHandle (); use File::Spec (); sub get_oldest { my ($dir) = @_; my $oldest; my $oldest_time; my $dh = DirHandle->new($dir); while (defined($_ = $dh->read())) { next unless (/\.pl$/i); my $full_path = File::Spec->catfile($dir, $_); my $time = (stat $full_path)[10]; if (!$oldest_time || $time < $oldest_time) { $oldest = $_; $oldest_time = $time; } } return $oldest; }

In reply to Re: Finding oldest file in directory by ikegami
in thread Finding oldest file in directory by Nitrox

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others scrutinizing the Monastery: (9)
    As of 2015-07-31 04:31 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (274 votes), past polls