Creating dbm files with perl

sherab has asked for the wisdom of the Perl Monks concerning the following question:

Hello monks!
I am migrating an older set of routines to AWS from Solaris. The code itself uses dbm files (.pag and .dir) and generates them via "makedbm" which is on the Solaris box that I am migrating from (it's a regular cron job). The new AWS is CentOS which doesn't have makedbm and I can't seem to find any source for makedbm. I know that it's easy for perl to open dbm files, but can perl generate the .pag and .dir files needed? I'm looking to just replace the Solaris "makedbm" with a perl routine if possible.

Comment on Creating dbm files with perl

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Re: Creating dbm files with perl by sherab (Scribe) on Apr 14, 2014 at 14:58 UTC
Making a set of files.... `dbmopen(%pets, "C:/temp/petFile", 0644) \|\| die "Cannot open petFile"; $pets{cat} = "Mao"; $pets{dog} = "Spot"; dbmclose(%pets);` [download] Accessing DBM files.... `dbmopen(%pets, "C:/temp/petFile", 0644) \|\| die "Cannot open petFile"; while(($animal, $name) = each %pets) { print "the name of my $animal is $name\n"; } dbmclose(%pets);` [download]	[reply] [d/l] [select]
Re: Creating dbm files with perl by CountZero (Bishop) on Apr 14, 2014 at 17:47 UTC
Of course, the `dbmopen` function will make all necessary files as needed. The documentation for `dbmopen` says: This binds a dbm, ndbm, sdbm, gdbm, or Berkeley DB file to a hash. HASH is the name of the hash. (Unlike normal open, the first argument is not a filehandle, even though it looks like one). DBNAME is the name of the database (without the .dir or .pag extension if any). If the database does not exist, it is created with protection specified by MASK (as modified by the umask). CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James My blog: Imperial Deltronics	[reply] [d/l] [select]
Re: Creating dbm files with perl by sherab (Scribe) on Apr 14, 2014 at 14:52 UTC
Note: I am pretty sure that dbmopen is the answer I have been seeking. I'll update this thread with an example as soon as I get one working. Just in case someone has this question in the future.	[reply]


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