Similar effects can be achieved on linux (keyd)

[jqtmviyu]

https://github.com/rvaiya/keyd

simple example

[ids]

*

[main]
capslock = overload(capslock_layer, esc)

[capslock_layer]

esc = capslock

h = left
j = down
k = up
l = right

u = pageup
p = pagedown
i = home
o = end

m = backspace

Are there more linux users would like to work together to improve this profile?

[jqtmviyu]

I found myself using vim more often for text editing in Linux, and shell has its own common rules. I'm using the hyprland desktop environment, which also has shortcut key functionality. The simple script provided above seems to be enough for my use case.

[jqtmviyu]

Another application that can achieve similar effects is xremap, but I haven't tried it. Those who are interested can give it a try.