Switch CapsLock And Esc And Take CapsLock As Control When It Is Pressed

Edit 1

Sometimes the method mentioned below just stops working, and I don’t know why. For now I just switch Esc and CapsLock, and leave Control part behind. It’s quite easy if you just want to switch Esc and CapsLock, all you need to do is install gnome-tweak-tool and find CapsLock key behavior under Typing, and choose Swap Esc and Caps Lock, just as shown below:

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Edit 2

I found a way to make it work. First, open gnome-tweak-tool and find CapsLock key behavior under Typing, and choose Make Caps Lock an additional Ctrl

Then add the following line in your ~/.bashrc file:

xcape -e 'Caps_Lock=Escape'

It works for me. The only problem is that you don’t have a CapsLock key anymore. But I guess you can map another key with gnome-tweak-tool. I don’t use that key a lot, so I haven’t done that yet. By the way, you don’t have to see the method below, it doesn’t work properly, at least for me.

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Preface

I’ve been using vim for years, and I’ve been using Esc for years. A few days before, I heard about an idea that I could switch Caps Lock and Esc to make vim more convenient, because you know, Caps Lock is nearer than Esc. This is interesting, but lately I heard about a even more convenient idea, which not only includes switching Caps Lock and Esc, but also taking Caps Lock as Control when it’s pressed. So in this way, Caps Lock has two distinct functionalities, one is to be used as Esc when punched, the other is to be used as Control when pressed, what a great idea! Let’s get started to make it real.

Installation

I’m using ubuntu 15.10, so I can only guarantee it works in linux. First thing you need to do is to install xcape.

sudo apt-get install xcape

Script

After that, create a new file called xmodmaprc, let’s put it under ~/Tools (or wherever you want, ~ denotes your home folder). The contents of xmodmaprc are as follows:

!
! make caps_lock an additional control
clear Lock
! NOTE: this keycode may need to be changed for your control
keycode 66 = Control_L
add Control = Control_L

!
! make escape be caps_lock
keysym Escape = Caps_Lock
add Lock = Caps_Lock

!
! make a fake escape key (so we can map it with xcape)
keycode 999 = Escape

Create another file called switch.sh, put it under ~/Tools too.

#!/bin/sh
# keyboard settings need the desktop to be fully loaded, so we let it sleep for 15s to wait for it.
sleep 15

xmodmap $HOME/Tools/xmodmaprc
xcape -e 'Control_L=Escape'

Add permission to make it executable

chmod +x ~/Tools/switch.sh

Now if you run ~/Tools/switch.sh, you will find that it’s already working

Startup

Of course you don’t want to run ~/Tools/switch.sh manually every time a session starts. Open Startup Applications in unity dash and add a new entry:

Now reboot, and you will find that you don’t have to run the command manually any more. Startup Applications does this for you automatically. Enjoy.

Reference

super-caps