--data-binary
(HTTP) This posts data exactly as specified with no extra processing whatsoever.
If you start the data with the letter @, the rest should be a filename. Data is posted in a similar manner as --data-ascii does, except that newlines are preserved and conversions are never done.
If this option is used several times, the ones following the first will append data as described in -d, --data.
--data-binary
(HTTP) This posts data exactly as specified with no extra processing whatsoever.
If you start the data with the letter @, the rest should be a filename. Data is posted in a similar manner as --data-ascii does, except that newlines are preserved and conversions are never done.
If this option is used several times, the ones following the first will append data as described in -d, --data.