Re: [Bug-wget] Timestamping

[Andre Majorel]

On 2011-03-21 20:39 +0300, Alexander Chernyavsky wrote:

> I'm doing wget http://tex.imm.uran.ru/tex/beameruserguide.pdf -O
> beameruserguide.pdf. Download completes and ls -l shows that file is
> dated as 2005-10-23 20:48. Date command shows Mon Mar 21 20:37:56 MSK
> 2011.
> 
> I'm reading in manual:
> >For this reason, -N (for timestamp-checking) is not supported in
> >combination with -O: since file is always newly created, it will always
> >have a very new timestamp.
> But in my case file has an old timestamp. I'm using -O and timestamping
> still works. Moreover, even without -N it continues to work. How can I
> turn off timestamping?

Interesting request. I would have thought that setting the mtime
of the local file according to the Last-Modified header of URL
was a feature. Anyway, if you want to find out what was just
downloaded, you could check the ctime. Assuming GNU find,

  touch .timestamp &&
    sleep 1 &&
    wget ... &&
    find . -cnewer .timestamp

You could also set the mtime to match the ctime. Again assuming
GNU find,

  touch .timestamp &&
    sleep 1 &&
    wget ... &&
    find . -cnewer .timestamp -print0 |
    perl -0ne 'BEGIN { $status = 0; $| = 1; }
      sub err (@) { print STDERR @_, "\n"; $status = 2; }
      chomp;
      @s = stat;
      if (@s == 0) { err "$_: $!"; next; }
      printf "%s: mtime %+.0f s\n", $_, $s[10] - $s[9];
      utime $s[8], $s[10], $_ or err "$_: $!\n";
      END { exit $status }'

-- 
André Majorel http://www.teaser.fr/~amajorel/