Re: [Bug-wget] execute external command only if download occurs with time stamping

[Giuseppe Scrivano]

Hello Micah,

Micah Cowan <address@hidden> writes:

> One could always save away timestamp and length information (and
> possibly a checksum) from the original, and then compare afterwards to
> see if there was a change. Not ideal, I agree, but personally I dislike
> the idea of adding command-line flags to change what the exit statuses
> will mean, particularly since in wget's case there may be a good variety
> of similar cases. Of course, if Giuseppe wants to do that, it's his call.

I agree with you that we shouldn't influence the return code with
command-line flags.  What you have suggested works well, even if it is
not the optimal way, it can be used until wget doesn't support external
programs execution.

Using a checksum looks like a good idea in any case; the server may
report the file as changed even if it contains the same data and in this
case you don't want to trigger the event.

Cheers,
Giuseppe