I have just fixed some issues on Rails Footnotes plugin, and now we have full support for Ubuntu linux (this should work with other distros too, but only Gedit and Gnome are supported for now.
Now you can open any files listed on stack trace, and get all bennefits of Footnotes just bellow your pages during development.
Se the screenshots to get an Idea of beneffits:
In the image above we are seeing a stack trace, then we clicked on a link created by Footnotes plugin, and Gedit just opened that file and switched the cursor to the correct line.
You can download the plugin with linux support directly from here (Github master tree)
To get instructions about installation process point to README file on package or go to Footnotes Project Page on Github
You can also read more about this plugin on my first post about it (In Portuguese), and also watch a little screencast showing the plugin in action.