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CURLOPT_APPEND(3) Library Functions Manual CURLOPT_APPEND(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 This functionality affects ftp and sftp EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode result; 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); result = curl_easy_perform(curl); curl_easy_cleanup(curl); } } HISTORY This option was known as CURLOPT_FTPAPPEND up to 7.16.4 AVAILABILITY Added in curl 7.17.0 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). SEE ALSO CURLOPT_DIRLISTONLY(3), CURLOPT_RESUME_FROM(3), CURLOPT_UPLOAD(3) libcurl 2026-06-11 CURLOPT_APPEND(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | HISTORY | AVAILABILITY | RETURN VALUE | SEE ALSO
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