$ curl --help
curl 7.9.8 (i386-redhat-linux-gnu) libcurl 7.9.8 (OpenSSL 0.9.7a) (ipv6 enabled)
Usage: curl [options...] <url>
Options: (H) means HTTP/HTTPS only, (F) means FTP only
-a/--append Append to target file when uploading (F)
-A/--user-agent <string> User-Agent to send to server (H)
-b/--cookie <name=string/file> Cookie string or file to read cookies from (H)
-B/--use-ascii Use ASCII/text transfer
-c/--cookie-jar <file> Write all cookies to this file after operation (H)
-C/--continue-at <offset> Specify absolute resume offset
-d/--data <data> HTTP POST data (H)
(略)

別物?