either getaddrinfo (3) or the obsolete gethostbyname (3).) Hostnames are resolved by the NSS framework ... resolver (5)). SEE ALSO getaddrinfo (3), gethostbyname (3), nsswitch.conf…gethostbyaddr() [POSIX.1-2001 only (function removed in POSIX.1-2008)] gethostbyname() [POSIX.1-2001 only (function removed in POSIX.1-2008)] gethostent ... gethostbyaddr() [POSIX.…directly with the name resolver (see gethostbyname (3)). IPv4 addresses are divided into unicast, broadcastfile containing aliases to be used with gethostbyname (3). • TZ and TZDIR give timezone information