1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.roff% 5.\" 6.\" @(#)networks.5 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt NETWORKS 5 10.Os BSD 4.2 11.Sh NAME 12.Nm networks 13.Nd network name data base 14.Sh DESCRIPTION 15The 16.Xr networks 17file contains information regarding 18the known networks which comprise the 19.Tn DARPA 20Internet. 21For each network a single line should be present with the following information: 22.Bd -unfilled -offset indent 23official network name 24network number 25aliases 26.Ed 27.Pp 28Items are separated by any number of blanks and/or tab characters. 29A ``#'' indicates the beginning of a comment; characters up to the end of 30the line are not interpreted by routines which search the file. 31This file is normally created from the official network data base 32maintained at the Network Information Control Center 33.Pq Tn NIC , 34though local 35changes may be required to bring it up to date regarding unofficial aliases 36and/or unknown networks. 37.Pp 38Network number may be specified in the conventional 39``.'' (dot) notation using the 40.Xr inet_network 3 41routine 42from the Internet address manipulation library, 43.Xr inet 3 . 44Network names may contain any printable character other than a field 45delimiter, newline, or comment character. 46.Sh FILES 47.Bl -tag -width /etc/networks -compact 48.It Pa /etc/networks 49The 50.Nm networks 51file resides in 52.Pa /etc . 53.El 54.Sh SEE ALSO 55.Xr getnetent 3 56.Sh BUGS 57A name server should be used instead of a static file. 58.Sh HISTORY 59The 60.Nm 61file format appeared in 62.Bx 4.2 . 63