On 10.04 (and other versions, but I am asking about 10.04), going to
System ➜ Preferences ➜ Appearance and selecting the Visual Effects tab shows possible values of None, Normal, and Extra. How can I query from the command line what the current setting is?
Yes, you can. If you are using GNOME, then there is excellent
to get list of plugins. Output should be something like
for "Extra" visual effects.