curl and libcurl is a tool for transferring files using URL syntax
curl offers a busload of useful tricks like proxy support, user authentication, ftp upload, HTTP post, SSL (https:) connections, cookies, file transfer resume and more. As you will see below, the amount of features will make your head spin! You can specify any amount of URLs on the command line. Urls can be fetched in a sequential manner in a specified order. If you specify URL without protocol:// prefix, curl will attempt to guess what protocol you might want. It will then default to HTTP but try other protocols based on often-used host name prefixes. For example, for host names starting with "ftp." curl will assume you want to speak FTP. Curl will attempt to re-use connections for multiple file transfers, so that getting many files from the same server will not do multiple connects / handshakes. This improves speed. Of course this is only done on files specified on a single command line and cannot be used between separate curl invokes.
DocumentationEnd user and development documentation at http://curl.haxx.se/docs/
released on 24 February 2017
14 October 2005
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This entry (in part or in whole) was last reviewed on 9 March 2017.
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