"IF EXIST" check for a link

Question

Is it possible to if check a url/file/link and then let curl download it if it exists?

if check "https://example.com/blabla/blabla.zip" (
curl ... 
)

Answer 1

To check if a file in link exist using curl use -I flag:

-I, --head

(HTTP FTP FILE) Fetch the headers only! HTTP-servers feature the command HEAD which this uses to get nothing but the header of a document. When used on an FTP or FILE file, curl displays the file size and last modification time only.

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curl.exe -I https://mirror.turbozoneinternet.net.br/videolan/vlc/3.0.8/win64/vlc-3.0.8-win64.exe | find "Content-Length:" >nul && (
echo / && echo/ Your link/file is Ok, downloading... && echo/ 
curl.exe -# https://mirror.turbozoneinternet.net.br/videolan/vlc/3.0.8/win64/vlc-3.0.8-win64.exe -o %temp%\vlc-3.0.8-win64.exe
) || (echo/ Error^!)

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This is adapted code from answer /by @pberlijn

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