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

NAME
       CURLOPT_DIRLISTONLY - ask for names only in a directory listing

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_setopt(CURL *handle, CURLOPT_DIRLISTONLY, long lis-
       tonly);

DESCRIPTION
       For FTP and SFTP based URLs a parameter set to 1 tells the  library  to
       list  the  names of files in a directory, rather than performing a full
       directory listing that would normally include file sizes, dates etc.

       For POP3 a parameter of 1 tells the library to list the  email  message
       or  messages on the POP3 server. This can be used to change the default
       behaviour of libcurl, when combined with a URL that contains a  message
       ID, to perform a "scan listing" which can then be used to determine the
       size of an email.

       Note: For FTP this causes a NLST command to be sent to the FTP  server.
       Beware that some FTP servers list only files in their response to NLST;
       they might not include subdirectories and symbolic links.

       Setting this option to 1 also implies a directory listing even  if  the
       URL doesn't end with a slash, which otherwise is necessary.

       Do  NOT  use this option if you also use CURLOPT_WILDCARDMATCH(3) as it
       will effectively break that feature then.

DEFAULT
       0, disabled

PROTOCOLS
       FTP, SFTP and POP3

EXAMPLE
       TODO

AVAILABILITY
       This option was known as CURLOPT_FTPLISTONLY up to 7.16.4. POP3 is sup-
       ported since 7.21.5.

RETURN VALUE
       Returns  CURLE_OK  if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       CURLOPT_CUSTOMREQUEST(3),

libcurl 7.54.0                 February 03, 2016        CURLOPT_DIRLISTONLY(3)