(HTTP) Fail silently (no output at all) on server errors. This is mostly done to better enable
scripts etc to better deal with failed attempts. In normal cases when a HTTP server fails to
deliver a document, it returns an HTML document stating so (which often also describes why and
more). This flag will prevent curl from outputting that and return error 22.
This method is not fail-safe and there are occasions where non-successful response codes will slip
through, especially when authentication is involved (response codes 401 and 407).
(HTTP/HTTPS) If the server reports that the requested page has moved to a different location
(indicated with a Location: header and a 3XX response code), this option will make curl redo the
request on the new place. If used together with -i, --include or -I, --head, headers from all
requested pages will be shown. When authentication is used, curl only sends its credentials to the
initial host. If a redirect takes curl to a different host, it won't be able to intercept the
user+password. See also --location-trusted on how to change this. You can limit the amount of
redirects to follow by using the --max-redirs option.
When curl follows a redirect and the request is not a plain GET (for example POST or PUT), it will
do the following request with a GET if the HTTP response was 301, 302, or 303. If the response
code was any other 3xx code, curl will re-send the following request using the same unmodified