---

c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. SPDX-License-Identifier: curl Title: CURLOPT_APPEND Section: 3 Source: libcurl See-also:

• CURLOPT_DIRLISTONLY (3)
• CURLOPT_RESUME_FROM (3)
• CURLOPT_UPLOAD (3)

---

NAME

CURLOPT_APPEND - append to the remote file

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_APPEND, long append);

DESCRIPTION

A long parameter set to 1 tells the library to append to the remote file instead of overwrite it. This is only useful when uploading to an FTP site.

DEFAULT

0 (disabled)

PROTOCOLS

FTP

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {

    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/to/newfile");
    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
    curl_easy_setopt(curl, CURLOPT_APPEND, 1L);

    curl_easy_perform(curl);
  }
}

AVAILABILITY

This option was known as CURLOPT_FTPAPPEND up to 7.16.4

RETURN VALUE

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