curl / libcurl / API / curl_easy_setopt / CURLOPT_APPEND

CURLOPT_APPEND explained

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

This functionality affects ftp and sftp

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);
  }
}

History

This option was known as CURLOPT_FTPAPPEND up to 7.16.4

Availability

Added in curl 7.17.0

Return value

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