c: Copyright (C) 1998 - 2022, Daniel Stenberg, , et al. SPDX-License-Identifier: curl Long: form-string Help: Specify multipart MIME data Protocols: HTTP SMTP IMAP Arg: See-also: form Category: http upload Example: --form-string "data" $URL Added: 7.13.2 --- Similar to --form except that the value string for the named parameter is used literally. Leading '@' and '<' characters, and the ';type=' string in the value have no special meaning. Use this in preference to --form if there's any possibility that the string value may accidentally trigger the '@' or '<' features of --form.