Xmodmap mapping: Make Macintosh Apple US Keyboards behave like a PC keyboard on Ubuntu

.Xmodmap

! Xmodmap mapping for Macintosh Apple US Keyboards
! Very useful if You want to use an Apple keyboard on your Ubuntu PC.

! It turns (Mac's) CMD to (PC's) ALT and (Mac's) ALT to (PC's/Ubuntu's) SUPER key
!    -- so it kind of behaves like a regular PC keyboard --
! and enable German Umlauts when pressing right CMD + u/a/o/s

! Put these lines into your ~/.Xmodmap and call xmodmap ~/.Xmodmap to change your keyboard layout

! clean most of the modifiers
clear control
clear mod4
clear mod1


! -----------------
! left side
! ----------------
! keycode 64 is the left alt key
keycode 64 = Super_L
! key code 133 is the left command key
keycode 133 = Alt_L

! ------------------
! right side
! -------------------
! key code 134 is the right command key
keycode 134 = Alt_R Meta_R
! keycode 108 is the right alt key
keycode 108 = Control_R



add mod4 = Super_L
add mod1 = Alt_L Meta_L
add mod1 = Alt_R Meta_R

add control = Control_L
add control = Control_R

keycode 134 = Mode_switch NoSymbol Mode_switch


keycode 191 = Insert
keycode 192 = Print Sys_Req

keycode 30 = u U udiaeresis Udiaeresis
keycode 38 = a A adiaeresis Adiaeresis
keycode 32 = o O odiaeresis Odiaeresis
keycode 39 = s S ssharp ssharp