.\" generated by cd2nroff 0.1 from CURLOPT_APPEND.md
.TH CURLOPT_APPEND 3 "2025-04-10" libcurl
.SH NAME
CURLOPT_APPEND \- append to the remote file
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_APPEND, long append);
.fi
.SH 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.
.SH DEFAULT
0 (disabled)
.SH PROTOCOLS
This functionality affects ftp and sftp
.SH EXAMPLE
.nf
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);
  }
}
.fi
.SH HISTORY
This option was known as CURLOPT_FTPAPPEND up to 7.16.4
.SH AVAILABILITY
Added in curl 7.17.0
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_DIRLISTONLY (3),
.BR CURLOPT_RESUME_FROM (3),
.BR CURLOPT_UPLOAD (3)