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SERVICES(5)		    BSD	File Formats Manual		   SERVICES(5)

NAME
     services -- service name data base

DESCRIPTION
     The services file contains	information regarding the known	services
     available in the Internet.	 For each service a single line	should be
     present with the following	information:

	   official service name
	   port	number
	   protocol name
	   aliases

     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 ``#'' indi-
     cates the beginning of a comment; subsequent characters up	to the end of
     the line are not interpreted by the routines which	search the file.

     Service names may contain any printable character other than a field de-
     limiter, newline, or comment character.

     If	"db" is	specified as source in the nsswitch.conf(5),
     /var/db/services.db is searched.  The database in /var/db/services.db
     needs to be updated with services_mkdb(8) after changes to	the services
     file have been applied.

NIS INTERACTION
     Access to the NIS services.byname map can be enabled by adding a single
     ``+'' on a	line by	itself in the /etc/services file.  This	causes the
     contents of the NIS services map to be inserted at	the location where the
     ``+'' appears.

FILES
     /etc/services  The	services file resides in /etc.

SEE ALSO
     getservent(3) nsswitch.conf(5) services_mkdb(8)

HISTORY
     The services file format appeared in 4.2BSD.

BUGS
     A name server should be used instead of a static file.

BSD				 April 4, 2010				   BSD

NAME | DESCRIPTION | NIS INTERACTION | FILES | SEE ALSO | HISTORY | BUGS

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