NAME

makedbm − make a NIS ndbm file

SYNOPSIS

/usr/etc/yp/makedbm [ −b ] [ −l ] [ −s ] [ −i yp_input_file ] [ −o yp_output_name ]

[ −d yp_domain_name ] [ −m yp_master_name ] infile outfile

makedbm [ −u dbmfilename ]

DESCRIPTION

makedbm takes infile and converts it to a pair of files in ndbm(3) format, 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 ‘\’, then the data for that record is continued on to the next line.  It is left for the clients of the Network Information Service (NIS) to interpret #; makedbm does not itself treat it as a comment character.  infile can be ‘−’, in which case the standard input is read. 

makedbm is meant to be used in generating dbm files for the NIS service, and it generates a special entry with the key yp_last_modified, which is the date of infile (or the current time, if infile is ‘−’). 

OPTIONS

−b Interdomain.  Propagate a map to all servers using the interdomain name server named(8C). 

−l Lowercase.  Convert the keys of the given map to lower case, so that host name matches, for example, can work independent of upper or lower case distinctions. 

−s Secure map.  Accept connections from secure NIS networks only. 

−i yp_input_file
Create a special entry with the key yp_input_file.

−o yp_output_name
Create a special entry with the key yp_output_name.

−d yp_domain_name
Create a special entry with the key yp_domain_name.

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

−u dbmfilename
Undo a dbm file.  That is, print out a dbm file one entry per line, with a single space separating keys from values. 

EXAMPLE

It is easy to write shell scripts to convert standard files such as /etc/passwd to the key value form used by makedbm.  For example:

#!/bin/awk -f
BEGIN { FS = ":"; OFS = "\t"; }
{ print $1, $0 }

takes the /etc/passwd file and converts it to a form that can be read by makedbm to make the NIS file passwd.byname.  That is, the key is a username, and the value is the remaining line in the /etc/passwd file. 

SEE ALSO

yppasswd(1), ndbm(3), named(8C)

NOTES

The Network Information Service (NIS) was formerly known as Sun Yellow Pages (YP).  The functionality of the two remains the same; only the name has changed. 

Sun Release 4.1  —  Last change: 9 September 1987