Documentation

http://it.slashdot.org/comments.pl?sid=2000314&cid=35231538 suggestions for writing up an email when finishing an IT-consulting gig

http://progit.org/book/ excellent git reference book, read it even if you are already familiar with git

http://lxr.linux.no/+trees linux kernel code cross-reference: you can quickly look up a piece of code,, find out in what version it appeared first, and so on.

http://developer.apple.com/documentation/CoreFoundation/Conceptual/CFBundles/Concepts/BundleAnatomy.html#//apple_ref/doc/uid/20001119-BAJFIBAJ Information on specific directories on Mac OS X that appear as one file, called bunlde;

http://apr.apache.org/ Documentation on Apache Portable Runtime (aka ‘apr_’

http://www.rootvg.net/ good online resource for AIX

http://refcards.com/ useful stuff, especially regex ref. cards, Vi shortcards, you name it

http://www.postgresql.org/docs/techdocs.2 collection of contributed articles on PostgresSQL