Ok. Here is what I found. On windows, the factions file is
~ /AppData/Roaming/Adobe/Photoshop/8.0/Adobe Photoshop CS Settings/Actions Palette.psp.lnk
WTF? Anyway, I copied the file to ~/Desktop, fired up CS6 and extracted all of the contained actions set.
The command
find ~/AppData/ -name "*.psp*"
will work to find the settings file on Windows (in a unix shell like cygwin).
The command
find ~/Library/ -name "*.psp*"
Should work on OS X.