Here's a 'universal solution'...
Paste this into a file:
require 'sketchup'
Choose where you want the list to go PICK ONE # ...#filepath=ENV["TEMP"]+"/Shortcuts.txt" ### list's in, =YOUR Temp...
#filepath=ENV["TMP"]+"/Shortcuts.txt" ### =YOUR Tmp...
filepath="C:/Temp/Shortcuts.txt" ### =SystemTemp (PC)
file=File.new(filepath,"w")
Sketchup.get_shortcuts.sort!.each{|s|file.puts s}
file.close