makemdbm(1M) makemdbm(1M)
makemdbm, makedbm - make an NIS mdbm file
makemdbm [ -b ] [ -l ] [ -i yp_input_file ] [ -o yp_output_NAME ]
[ -d yp_domain_NAME ] [ -m yp_master_NAME ] infile outfile
makemdbm [ -u mdbmfilename ]
makemdbm takes infile and converts it to a file in mdbm(3B) format. Each
line of the input file is converted to a single mdbm 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 standard
input is read.
makemdbm is meant to be used in generating mdbm files for NIS. It
generates a special entry with the key yp_last_modified, which is the
date of infile (or the current time, if infile is -).
-l Convert all uppercase characters in the keys to lowercase.
-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
hostname is specified, yp_master_NAME is set to the local hostname.
-u mdbmfilename
Undo a mdbm file. That is, print out a mdbm file one entry per
line, with a single space separating keys from values.
It is easy to write shell scripts to convert standard files such as
/etc/passwd to the key value form used by makemdbm. For example,
#!/usr/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
makemdbm to make the NIS file passwd.byname. That is, the key is a
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makemdbm(1M) makemdbm(1M)
username, and the value is the remaining line in the /etc/passwd file.
yppasswd(1), nis(1M), mdbm(3B).
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