dbmopen %hash, dbname, mode
Binds a DBM file (dbname) to a hash (%hash).
is the name of the database without the .dir or .pag
extension. If the database does not exist, and a valid mode is
specified, the database is created with the permissions specified by
mode (as modified by the umask). To prevent creation of the database
if it doesn't exist, you may specify a mode of
undef, and the
function will return a false value if it can't find an existing
database. If your system supports only the older DBM functions, you
may have only one
dbmopen in your program.
Values assigned to the hash prior to the
are not accessible.
If you don't have write access to the DBM file, you can only read the
hash variables, not set them.
This function is actually just a call to
tie with the proper
arguments, but is provided for backward compatibility with older
versions of Perl.