I have a script that I would like to have automatically restart when a die() occurs.

When I use the following code, if spits out some junk (represented as some unicode characters) when it dies. It only does this the first time. Every observed restart/die is does so cleanly without those characters.

I'm concerned that this "junk" might cause my looping program (a Net::FTP download script) to end and not restart. Do you see this as a concern, and if so, any clue why it's dumping garbage the first time around?

#!/usr/bin/perl -w

$SIG{__DIE__} = \&restart;

print "Dying!\n";
sleep(5);
die($!);


sub restart{

print "Restart...\n\n";
exec($0);

}

__END__
D:\projects\test>dietest.pl
Dying!
Restart...

??D:\projects\test>Dying!
Restart...

Dying!
Restart...

Dying!

[download]

Now that I think of it... is this the best way to restart a dying program? Is there some cleaner/more reliable method?

Thanks in advance,

John J Reiser
newrisedesigns.com

In reply to Problem with using $SIG{__DIE__} to restart program by newrisedesigns

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.