Unknown option: "-3" Unix manual page for CURLOPT_SSLCERT. (host=minya system=Darwin)
CURLOPT_SSLCERT(3)         curl_easy_setopt options         CURLOPT_SSLCERT(3)

NAME
       CURLOPT_SSLCERT - set SSL client certificate

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLCERT, char *cert);

DESCRIPTION
       Pass  a  pointer  to  a zero terminated string as parameter. The string
       should be the file name of your client certificate. The default  format
       is  "P12"  on  Secure  Transport and "PEM" on other engines, and can be
       changed with CURLOPT_SSLCERTTYPE(3).

       With NSS or Secure Transport, this can also be the nickname of the cer-
       tificate  you  wish to authenticate with as it is named in the security
       database. If you want to use a file from the current directory,  please
       precede  it  with "./" prefix, in order to avoid confusion with a nick-
       name.

       When using a client certificate, you most likely also need to provide a
       private key with CURLOPT_SSLKEY(3).

       The  application  does not have to keep the string around after setting
       this option.

DEFAULT
       NULL

PROTOCOLS
       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE
       TODO

AVAILABILITY
       If built TLS enabled.

RETURN VALUE
       Returns CURLE_OK  if  TLS  enabled,  CURLE_UNKNOWN_OPTION  if  not,  or
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO
       CURLOPT_SSLCERTTYPE(3), CURLOPT_SSLKEY(3),

libcurl 7.54.0                 December 21, 2016            CURLOPT_SSLCERT(3)