
 * Linux: <https://man7.org/linux/man-pages/man2/sendfile.2.html>
 * macOS: <https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendfile.2.html> (archived, actually for iOS)
 * NetBSD: <https://man.netbsd.org/sendfile.2>
 * OpenBSD: <https://man.openbsd.org/sendfile.2>
 * iOS: <https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendfile.2.html> (archived)
 * illumos: <https://illumos.org/man/3SOCKET/sendfile>
