On Tue, 29 Apr 2025, Aleksei wrote:
I'm asking for "and update the etag file" part to be done by curl.
Scenario:
1) curl downloads a webpage, saving etag file in file0.etag
Something like this:
curl --etag-save file0.etag $URL
2) website updates a webpage (update 1)
3) curl uses "--etag-compare file0.etag" and re-downloads the page -
so far so good
Download the file if changed, update the etag file:
curl --etag-compare file0.etag --etag-save file0.etag $URL
4) website updates a webpage (update 2)
5) How do I check that webpage is updated now? "--etag-compare
file0.etag" will re-download even if update 2 has been downloaded
You repeat the command above:
curl --etag-compare file0.etag --etag-save file0.etag $URL
... which only downloads the URL again if it is different than the last
download.
--
/ daniel.haxx.se || https://rock-solid.curl.dev
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