CURLOPT_DIRLISTONLY - ask for names only in a directory listing
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DIRLISTONLY, long listonly);
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
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)
will effectively break that feature then.
FTP, SFTP and POP3
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/");
/* list only */
curl_easy_setopt(curl, CURLOPT_DIRLISTONLY, 1L);
ret = curl_easy_perform(curl);
This option was known as CURLOPT_FTPLISTONLY up to 7.16.4. POP3 is supported
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.