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Hello, Linux newsletter subscribers.

This weekly mailing always leads off with an apology for using the name of
a very specific operating system kernel to trick you in to reading about
all sorts of free and open source projects. That's okay though. Here's
what's new this week.

The history of programming has demonstrated a gradual (if inexorable)
progress from low-level changes to higher and layered levels of abstraction.
Flexibility demands more flexibility, however. Brian McConnell recently
stopped coding due to frustration with our current models. Now he's
written about why--and what modifications to existing programming languages
(specifically Python) could make programming much more fun:

http://www.onlamp.com/pub/a/python/2007/01/18/why-i-stopped-coding.html

The volume of spam is going up again. If you run a mail server, this is no
surprise. A nicer surprise may be that greylisting--delaying potential
spam through standard SMTP means--can protect your users and bandwidth. Even
better, you can perform this greylisting at the firewall level, before it
even reaches your mail server. Dan Langille demonstrates how PF can slow spam:

http://www.onlamp.com/pub/a/bsd/2007/01/18/greylisting-with-pf.html

Ruby on Rails aims at making database-backed web sites easy to use. It
usually, but not always, produces HTML. There's no reason you can't
produce any other document format, however. Deepak Vohra shows how to produce
valid XML with the Rails library Builder. Don't type angle brackets yourself:

http://www.xml.com/pub/a/2007/01/17/making-xml-in-a-rails-app-xml-builder.html

If your colleagues (or worse, friends) have to stay put on the Windows
platform, give them a chance to explore the freedom you enjoy. James Avery
and Jim Holmes have written a short apologia for using free software on Windows.
Pass it on:

http://www.windowsdevcenter.com/pub/a/windows/2007/01/19/the-case-for-freeware-and-open-source-windows-tools.html

In weblogs this week, Andy Oram pondered what's missing in online
documentation:

http://www.oreillynet.com/onlamp/blog/2007/01/online_documentation_whats_mis.html

... and suggested that redefining the calendar is easier than switching to
open document formats:

http://www.oreillynet.com/onlamp/blog/2007/01/a_most_ingenious_paradox_make.html

Tom Adelstein thought through why Microsoft administrators might need to
learn Linux System Administration:

http://www.oreillynet.com/onlamp/blog/2007/01/oreillys_linux_system_administ_1.html

Nitesh Dhanjani exposed how cross site request forgeries work:

http://www.oreillynet.com/onlamp/blog/2007/01/the_unfortunate_prevalence_of.html

Todd Ogasawara found an interview with the authors of RubyCLR:

http://www.oreillynet.com/onlamp/blog/2007/01/sam_ramji_interviews_john_lam.html

Ann Barcomb summarized the week in Perl 6:

http://www.oreillynet.com/onlamp/blog/2007/01/weekly_perl_6_mailing_list_sum_20.html

Your editor highlighted good thinking about The Big Rewrite:

http://www.oreillynet.com/onlamp/blog/2007/01/considering_the_big_rewrite.html

Shashank Tiwari wonders if Google Spreadsheets can sink Java enterprise
applications:

http://www.oreillynet.com/onjava/blog/2007/01/google_spreadsheets_for_the_en.html

... because Paul Browne wondered if they would kill Java as a whole:

http://www.oreillynet.com/onjava/blog/2007/01/google_spreadsheets_mean_the_e.html

Timothy M. O'Brien calls design patterns "powerful and dangerous":

http://www.oreillynet.com/onjava/blog/2007/01/ask_onjava_patterns_are_you_a_1.html

Daniel Steinberg wants Java on the iPhone:

http://www.oreillynet.com/onjava/blog/2007/01/java_to_the_iphone_can_you_hea.html

Juliet Kemp found and fixed a strange localhost problem with Debian:

http://www.oreillynet.com/linux/blog/2007/01/debian_and_localhostlocaldomai.html

Caitlyn Martin discussed the Linux Distribution Proliferation Problem:

http://www.oreillynet.com/linux/blog/2007/01/so_many_distros_so_little_time.html

Nathaniel S. H. Brown explained the PHP to Ruby on Rails evolution of a
web developer:

http://www.oreillynet.com/ruby/blog/2007/01/php_vs_ruby_on_rails_an_evolu.html

pat eyler praised all of the Ruby implementors for working together:

http://www.oreillynet.com/ruby/blog/2007/01/lots_of_rubies_all_playing_nic.html

Gregory Brown showed how to replace multiple inheritance with mixins:

http://www.oreillynet.com/ruby/blog/2007/01/digging_deep_mixing_it_up_or_i_1.html

That's it for this week. Go out and do good things.

Until next time,
- c

chromatic
chromatic@oreilly.com
Technical Editor
O'Reilly Network

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# posted by giu @ 5:03 PM