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Data Munging with Sprog (4 tags)
Sprog is a graphical programming environment written in Perl, programmable by connecting components visually and setting their properties. Sure, you've heard that promise before--but Grant McLean demonstrates how to retrieve and munge tabular data from a web page into LDIF files without writing a lick of code.

Top Ten Mac OS X Tips for Unix Geeks (2 tags)
From starting up to shutting down, there are big differences between Mac OS X and Unix machines. Brian Jepson, coauthor of Mac OS X for Unix Geeks offers 10 tips he gathered while working on the book. If you're a Unix geek moving to Mac OS X, these tips will help smooth the way. Brian has recently updated this "oldie but goodie."

Using Perl to Manage Plist Files (2 tags)
A common question is how to manage complex Plist files with scripts. The defaults command, which is often used to manage simple values in Plist files, does not easily manage the nested arrays or dictionaries that are present in most Plist files. In this first article of a two-part series, James Reynolds pulls together a little Perl and Cocoa to solve this problem.

Using Perl to Manage Plist Files, Part 2 (2 tags)
Part 2 goes into much more detail on managing Plist files. You'll change some values and save the altered Plist file back to disk. Then you'll loop over entries in a Plist file, get a dump of the NetInfo database, and print all the users in the database using Perl foreach loops. To do that you'll convert the Cocoa dictionaries and arrays to Perl hashes and arrays. Finally, you'll create a Plist file from scratch, build the sample Xgrid cal job listed in the Xgrid man page by creating the structure using Perl hashes and arrays, and then convert them to Cocoa equivalents.