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services(4)                      File Formats                      services(4)

       services - Internet services and aliases



       The services file  is a local source of information regarding each ser-
       vice available through the Internet. The services file can be  used  in
       conjunction  with  or  instead of other services sources, including the
       NIS maps "services.byname" and the NIS+ table "services."  Programs use
       the getservbyname(3SOCKET) routines to access this information.

       The  services  file  contains an entry for each service. Each entry has
       the form:

       service-name   port/protocol   aliases

       service-name            This is the official Internet service name.

       port/protocol           This field is composed of the port  number  and
                               protocol through which the service is provided,
                               for instance, 512/tcp.

       aliases                 This is a list of alternate names by which  the
                               service might be requested.

       Fields can be separated by any number of SPACE and/or TAB characters. A
       number sign (#) indicates the beginning of a  comment;  any  characters
       that  follow  the  comment  character 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, a NEWLINE, or a comment character.

       Any  changes  to a port assignment do not affect the actual port regis-
       tration of the service.

       /etc/nsswitch.conf      configuration file for name-service switch

       getservbyname(3SOCKET), inetd.conf(4), nsswitch.conf(4)

       /etc/inet/services is the official SVR4 name of the services file.  The
       symbolic link /etc/services exists for BSD compatibility.

SunOS 5.10                        12 Oct 2000                      services(4)