SERVICES(5) File Formats Manual SERVICES(5)
services - service name data base
The 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:
official service name
Items are separated by any number of blanks and/or tab characters. The
port number and protocol name are considered a single 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.
Service names may contain any printable character other than a field
delimiter, newline, or comment character.
A name server should be used instead of a static file. A binary
indexed file format should be available for fast access.
4th Berkeley Distribution 15 January 1983 SERVICES(5)