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 makedbm(1M)							 makedbm(1M)




 NAME
      makedbm - make a Network Information System database

 SYNOPSIS
      /usr/sbin/makedbm [-b] [-l] [-s] [-i nis_input_file]
	   [-o nis_output_name] [-d nis_domain_name]
	   [-m nis_master_name] infile outfile

      /usr/sbin/makedbm -u database_name

    Remarks
      The Network Information Service (NIS) was formerly known as Yellow
      Pages (yp).  Although the name has changed, the functionality of the
      service remains the same.

 DESCRIPTION
      makedbm generates databases (maps) for the Network Information System
      (NIS) from infile.  A database created by makedbm consists of two
      files: outfile.pag and outfile.dir.  A makedbm database contains
      records called dbm records composed of key-value pairs.

      Each line of infile is converted to a single dbm record; all
      characters up to the first tab or space form the key, and the
      remainder of the line is the value.  If a value read from infile ends
      with \, the value for that record is continued onto the next line.
      The NIS clients must interpret the # character (which means that
      makedbm does not treat the # as if it precedes a comment).  If infile
      is a hyphen (-), makedbm reads standard input.

      makedbm always generates a special dbm record with the key
      YP_LAST_MODIFIED, whose value is the time of last modification of
      infile (or the current time, if infile is -).  This value is also
      known as the order number of a map, and yppoll prints it for a
      specified NIS map (see yppoll(1M)).

      Another special dbm record created by makedbm has the key
      YP_MASTER_NAME.  Its value is usually the host name retrieved by
      gethostname(); however, the -m option can be used to specify a
      different value (see gethostname(2)).

      If the -b option is used, another special dbm record with the
      YP_INTERDOMAIN key is created.  When this key exists in the NIS
      host.by* maps and the NIS host name resolution fails, the ypserv
      process will query the Internet domain name server, named(1M), to
      provide the host name resolution.	 Before using the -b option, it is
      recommended that the name services switch, switch(4), be set to allow
      NIS host name resolution first.  (Note that, since the ypserv process
      only checks hosts.byname and hosts.byaddr for the existence of the
      YP_INTERDOMAIN key, using the -b option on any other NIS map will have
      no effect.  Also, the -b option should be used on both the
      hosts.byname and hosts.byaddr maps, not one exclusively.)



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 makedbm(1M)							 makedbm(1M)




      If the -s option is used, another special dbm record created is the
      YP_SECURE key.  If this key exists in an NIS map, ypserv will only
      allow privileged processes (applications that can create reserved
      ports) to access the data within the map.

    Options
      makedbm recognizes the following options and command-line arguments.

      -b   Create a special dbm record with the key YP_INTERDOMAIN.  This
	   key, which is in the hosts.byname and hosts.byaddr maps, allows
	   the ypserv process to query the Internet domain name server, (see
	   named(1M)).

      -l   Convert the keys of the given map to lowercase.  This command
	   option allows host name matches to work independent of
	   character-case distinctions.

      -s   Accept connections from secure NIS networks only.

      -i   Create a special dbm record with the key YP_INPUT_FILE and the
	   value nis_input_file.  If the -s option is used, another special
	   dbm record created is the YP_SECURE key.  If this key exists in
	   an NIS map, ypserv will only allow privileged processes to access
	   the data within the map.  (i.e.  applications that can create
	   reserved ports.)

      -o   Create a special dbm record with the key YP_OUTPUT_NAME and the
	   value nis_output_name.

      -d   Create a special dbm record with the key YP_DOMAIN_NAME and the
	   value nis_domain_name.

      -m   Replace the value of the special dbm record whose key is
	   YP_MASTER_NAME with nis_master_name.

      -u   Undo the database_name (i.e., write the contents of database_name
	   to the standard output), one dbm record per line.  A single space
	   separates each key from its value.

 EXAMPLES
      Shell scripts can be written to convert ASCII files such as
      /etc/netgroup to the key-value form used by makedbm.  For example,

	   #!/usr/bin/sh
	   /usr/bin/awk 'BEGIN { FS = ":" } { print $1, $0 }' \
		/etc/netgroup | \
	   makedbm - netgroup

      converts the file /etc/netgroup to a form that is read by makedbm to
      make the NIS map netgroup.  The keys in the database are netgroup(4)
      names, and the values are the remainders of the lines in the



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 makedbm(1M)							 makedbm(1M)




      /etc/netgroup file.

 AUTHOR
      makedbm was developed by Sun Microsystems, Inc.

 SEE ALSO
      domainname(1), ypinit(1M), ypmake(1M), yppoll(1M), gethostname(2),
      netgroup(4), ypfiles(4).














































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