curl manual

curl is a command line tool used to transfer data from or to a server using supported protocols like HTTP, HTTPS, FTP, and more. It offers features like proxy support, user authentication, file transfer resume, SSL connections, cookies, and can reuse connections for multiple file transfers from the same server to improve speed. curl is powered by libcurl for all transfer-related functionality. It allows specifying multiple URLs or URL patterns on the command line to fetch sequentially.