http://www.perlmonks.org?node_id=1117

lib:NDBM_File

See the current Perl documentation for lib:NDBM_File.

Here is our local, out-dated (pre-5.6) version:

NDBM_File - Tied access to ndbm files

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 use NDBM_File;
 use Fcntl;       # for O_ constants

 tie(%h, 'NDBM_File', 'Op.dbmx', O_RDWR|O_CREAT, 0640);

 untie %h;

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See tie

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