Bash vs. Vista PowerShell

Here's a slightly dated but still interesting article on Bash vs. Vista PowerShell (PDF).

It's especially interesting for UNIX geezers like me :) (though I personally use the Korn shell for scripting). Some of the PowerShell syntax is surprisingly Perl/PHP-like, especially that for loop in Listing 1 and the use of "$_". Other features of note include the ability to prevent commands from external sources from executing without a digital signature, and how it is able to manipulate registry values just like files (just like how "everything is a file" in UNIX).