man/man8/makedbm.8

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 MAKEDBM 8 "Aug 17, 1999"
 NAME
makedbm - make a dbm file, or get a text file from a dbm file
 SYNOPSIS

makedbm [-b] [-l] [-s] [-E] [-i yp_input_file]
 [-o yp_output_name] [-d yp_domain_name]
 [-m yp_master_name] [-S delimiter]
 [-D number_of_delimiters] infile outfile


makedbm [-u dbmfilename]


 DESCRIPTION

The makedbm utility takes the infile and converts it to a pair of
files in ndbm format (see ndbm(3C)), namely
outfile.pag and outfile.dir. Each line of the input
file is converted to a single dbm record. All characters up to the first
TAB or SPACE form the key, and the rest of the line is the data. If
a line ends with `\e' (backslash), the data for that record is continued on to
the next line. makedbm does not treat `#' (pound-sign) as a special
character.

Because makedbm is mainly used in generating dbm files for the
NIS name service, it generates a special entry with the key
yp_last_modified, which is the date of infile (or the current time,
if infile is `-'). The entries that have keys with the prefix
yp_ are interpreted by NIS server utilities.
 OPTIONS

The following options are supported:
-b

Insert the YP_INTERDOMAIN into the output. This key causes
ypserv(8) to use DNS for host name and address lookups for hosts
not found in the maps.


-d yp_domain_name

Create a special entry with the key yp_domain_name.


-D number_of delimiters

Specify number_of_delimiters to skip before forming the key.


-E

Delimiters are escaped.


-i yp_input_file

Create a special entry with the key yp_input_file.


-l

Lower case. Convert the keys of the given map to lower case, so that, for
example, host name matches succeed independent of upper or lower case
distinctions.


-m yp_master_name

Create a special entry with the key yp_master_name. If no master host
name is specified, yp_master_name is set to the local host name.


-o yp_output_name

Create a special entry with the key yp_output_name.


-s

Secure map. Accept connections from secure NIS networks only.


-S delimiter

Specify the delimiter to use instead of the default delimiter for forming
the key.


-u dbmfilename

Undo a dbm file. Prints out the file in text format, one entry per line,
with a single space separating keys from values.


 OPERANDS

The following operands are supported:
infile

Input file for makedbm. If infile is `-' (dash), the
standard input is read.


outfile

One of two output files in ndbm format: outfile.pag and
outfile.dir.


 SEE ALSO

 ndbm (3C),  attributes (7),  ypserv (8)