setxkbmap us -variant colemak -option ctrl:swap_lalt_lctl
printf bvdgb'
'hkmh|sed s,.,'&\nkeysym & =',g|grep =.|xmodmap -

set -o vi
while read a b; do
echo "keysym $a =$a ${a^} $a ${a^} $b"
done <<x|xmodmap -
f at
a asterisk
r plus
s minus
t equal
g asciicircum
n numbersign
e asciitilde
i percent
c dollar
h ampersand
o odiaeresis
u udiaeresis
p ssharp
x