execute script after (auto)mounting external device

[Tom H]

>> In a nautilus (file browser) window go to Edit > Preferences and select
>> the Media tab.
>
> Thanks for the pointer, Markus! I found the menu (thanks, didn't know that).
>
> But there are only about a dozen choices for "Type" in that menu (I have
> a German local, so the entry is called "Sonstige Datenträger"; probably
> something like "Additional devices" in English). My type would be
> "TrueCrypt-Partition-From-USB-Stick-A". I wouldn't mind configuring my
> post-mount script from the command line.

I have been looking for a GUI for devicekit-disks but no luck.

At the cli, there is devkit-disks.