CURLOPT_POSTQUOTE (3) - Linux Manuals
CURLOPT_POSTQUOTE: (S)FTP commands to run after the transfer
CURLOPT_POSTQUOTE - (S)FTP commands to run after the transfer
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTQUOTE, struct curl_slist *cmds);
Pass a pointer to a linked list of FTP or SFTP commands to pass to the server
after your FTP transfer request. The commands will only be run if no error
occurred. The linked list should be a fully valid list of struct curl_slist
structs properly filled in as described for CURLOPT_QUOTE(3)
Disable this operation again by setting a NULL to this option.
SFTP and FTP
If support for the protocols are built-in.
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.