Extending Nautilus with Scripts and Extensions
Nautilus, the GNOME file manager, has a host of functionality for browsing and managing file systems, and for accessing remote servers including Windows shares, FTP servers, SSH servers, and WebDAV servers. On top of its built-in capabilities, you can extend the functionality of Nautilus by using Nautilus Scripts and Extensions. It's not too hard to do, and I'll show you how to get started.
A Nautilus Script is an executable file, written in a scripting language, which can perform some function on files or folders selected from within the Nautilus file manager window.
Linux is rich with scripting languages, including Python, Perl, and Ruby, and has a variety of command line shells to choose from, such as Bash, Zsh, and Csh. Any of these can be used to write a Nautilus Script.
You don't need to know how to write Nautilus Scripts to use them. A search on the Web for Nautilus Scripts will return a number of links to scripts other people have already written and have made available for others to use. G-Scripts is a site that gathers many of these scripts.