Swap modify keys in Linux Ubuntu

swap-key-guide.sh

// https://www.x.org/archive/X11R6.8.1/doc/xmodmap.1.html
// https://www.linux.com/learn/how-kill-caps-lock-your-linux-desktop
// http://egloos.zum.com/nemonein/v/5222946

$ tail .zshrc
if [[ "$(uname -s)" == "Linux" ]]; then
	if [ -x ~/Dropbox/config/tweak/swap_key.sh ]; then
		xmodmap ~/Dropbox/config/tweak/swap_key.sh
	fi
fi

#--------------------------------------------------

$ cat swap_key.sh  
! swap caps_lock to alt_r
remove Lock = Caps_Lock
keysym Caps_Lock = Alt_R


#--------------------------------------------------

$ tail .zshrc
[ -f ~/.Xmodmap ] && xmodmap ~/.Xmodmap

#--------------------------------------------------

$ cat .Xmodmap
! remove 
!remove lock = Caps_Lock
!remove mod1 = Alt_R

! swap
!keysym Caps_Lock = Alt_R

! bind
keycode 66 = Alt_R
keycode 108 = Caps_Lock

! assign
!add lock = Caps_Lock

#--------------------------------------------------

xmodmap -e 'keycode 108 = Caps_Lock'
xmodmap -e 'keycode 66 = Alt_R'

#--------------------------------------------------