File Formats                                           ypfiles(4)

NAME
     ypfiles - Network Information Service  Version  2,  formerly
     knows as YP

DESCRIPTION
     The NIS network  information  service  uses  a  distributed,
     replicated  database  of dbm files (in ASCII form) contained
     in the /var/yp directory hierarchy on each NIS  server.  NIS
     has  been  replaced  by NIS+, the new version of the Network
     Information Service. See nis+(1). This release only supports
     the  client  functionality  of  NIS, (see ypclnt(3NSL)). The
     client functions are either supported by the ypserv  process
     running  on a machine with an earlier version of SunOS or by
     the   NIS+   server   in   "YP-compatibility"   mode,   (see
     rpc.nisd(1M)).

     A dbm database served by the NIS server  is  called  an  NIS
     map. An NIS domain is a subdirectory of /var/yp containing a
     set of NIS maps on each NIS server.

     Standard    nicknames    are    defined    in    the    file
     /var/yp/nicknames.  These  names can be used in place of the
     full map name in the ypmatch and ypcat commands. The command
     ypcat  -x  can  be  used to display the current set of nick-
     names. The command ypwhich -m can be used to display all the
     available maps.  Each line of the nickname file contains two
     fields separated by white space.  The  first  field  is  the
     nickname and the second field is the name of the map that it
     expands to. The nickname cannot contain a ".".

FILES
     /var/yp/nicknames
           nicknames file

SEE ALSO
     nis+(1),    nisaddent(1M),    nissetup(1M),    rpc.nisd(1M),
     ypbind(1M),    ypinit(1M),    dbm(3UCB),   secure_rpc(3NSL),
     ypclnt(3NSL)

NOTES
     The NIS+ server, rpc.nisd,  when  run  in  "YP-compatibility
     mode",  can  support  NIS  clients only for the standard NIS
     maps listed below, provided that it has been set up to serve
     the   corresponding   NIS+  tables  using  nissetup(1M)  and
     nisaddent(1M). The NIS+ server should  serve  the  directory
     with the same name (case sensitive) as the domainname of the
     NIS client. NIS+ servers use secure  RPC  to  verify  client
     credentials  but  the  NIS clients do not authenticate their
     requests using secure RPC. Therefore, NIS clients  can  look
     up  the  information  stored  by the NIS+ server only if the
     information has "read" access for an unauthenticated  client
     (i.e. one with "nobody" NIS+ credentials).

SunOS 5.8           Last change: 20 Jul 2001                    1

File Formats                                           ypfiles(4)

     NIS maps
           NIS+ tables

     passwd.byname
           passwd.org_dir

     passwd.byuid
           passwd.org_dir

     group.byname
           group.org_dir

     group.bygid
           group.org_dir

     publickey.byname
           cred.org_dir

     hosts.byaddr
           hosts.org_dir

     hosts.byname
           hosts.org_dir

     mail.byaddr
           mail_aliases.org_dir

     mail.aliases
           mail_aliases.org_dir

     services.byname
           services.org_dir

     services.byservicename
           services.org_dir

     rpc.bynumber
           rpc.org_dir

     rpc.byname
           rpc.org_dir

     protocols.bynumber
           protocols.org_dir

     protocols.byname
           protocols.org_dir

     networks.byaddr
           networks.org_dir

     networks.byname

SunOS 5.8           Last change: 20 Jul 2001                    2

File Formats                                           ypfiles(4)

           networks.org_dir

     netmasks.bymask
           netmasks.org_dir

     netmasks.byaddr
           netmasks.org_dir

     ethers.byname
           ethers.org_dir

     ethers.byaddr
           ethers.byname

     bootparams
           bootparams

     auto.master
           auto_master.org_dir

     auto.home
           auto_home.org_dir

     auto.direct
           auto_direct.org_dir

     auto.src
           auto_src.org_dir

SunOS 5.8           Last change: 20 Jul 2001                    3