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---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.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)
Protocol:
- FTP
- SFTP
Added-in: 7.17.0
---
# NAME
CURLOPT_APPEND - append to the remote file
# SYNOPSIS
~~~c
#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%
# EXAMPLE
~~~c
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%
# RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
libcurl-errors(3).
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