4.2BSD/usr/man/man5/services.5

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.TH SERVICES 5  "15 January 1983"
.UC 4
.SH NAME
services \- service name data base
.SH DESCRIPTION
The
.I services
file contains information regarding
the known services available in the DARPA Internet.
For each service a single line should be present
with the following information:
.HP 10
official service name
.br
.ns
.HP 10
port number
.br
.ns
.HP 10
protocol name
.br
.ns
.HP 10
aliases
.PP
Items are separated by any number of blanks and/or
tab characters.  The port number and protocol name
are considered a single 
.IR item ;
a ``/'' is used to
separate the port and protocol (e.g. ``512/tcp'').
A ``#'' indicates the beginning of
a comment; characters up to the end of the line are
not interpreted by routines which search the file.
.PP
Service names may contain any printable
character other than a field delimiter, newline,
or comment character.
.SH FILES
/etc/services
.SH "SEE ALSO"
getservent(3N)
.SH BUGS
A name server should be used instead of a static file.
A binary indexed file format should be available for fast access.