Long: data-binary Arg: <data> Help: HTTP POST binary data Protocols: 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 does, except that newlines and carriage returns are preserved and conversions are never done. Like --data the default content-type sent to the server is application/x-www-form-urlencoded. If you want the data to be treated as arbitrary binary data by the server then set the content-type to octet-stream: -H "Content-Type: application/octet-stream". If this option is used several times, the ones following the first will append data as described in --data.