d/--data (HTTP) Sends the speci?ed data in a POST request to the HTTP server, in a way that can emulate as if a user has ?lled in a HTML form and pressed the
submit button. Note that the data is sent exactly as speci?ed with no extra processing (with all newlines cut off). The data is expected to be "url-encoded".
This will cause curl to pass the data to the server using the content-type application/x-www-form-urlencoded. Compare to -F/--form. If this option is used
more than once on the same command line, the data pieces speci?ed will be merged together with a separating &-letter. Thus, using ’-d name=daniel -d
skill=lousy’ would generate a post chunk that looks like ’name=daniel&skill=lousy’.