How do I remap the Caps Lock and Ctrl keys?

I'd like to remap my keys such that Ctrl behaves as the Caps Lock key and vice-versa. Also, if possible I'd like the settings to be available only within the currently logged-in user. How can I achieve this?

I'm a vim user, unlike the other people who use this machine, so I'd like those settings only for my account.

13.10+:

Install and use gnome-tweak-tool > Keyboard & Mouse > Keyboard > Additional Layout Options > Caps Lock behavior.

Pre 13.10:

Open the Keyboard Preferences dialog (System -> Preferences -> Keyboard). On the layout tab, click the Options... button. Expand the Ctrl key position section and select Swap Ctrl and Caps Lock.

Those settings should be applied each time you log in, and will only affect your user account.

Here's a way to do it without installing extra software:

setxkbmap -layout us -option ctrl:swapcaps

Source:

• http://www.noah.org/wiki/CapsLock_Remap_Howto

One of the best ways to do that graphically if you are using the GNOME shell is to install Gnome Tweak Tool:

sudo apt-get install gnome-tweak-tool

For version 3.30.0 and later:

• Open tweak-tool and click on the Keyboard & Mouse section in the left menu bar.
• Click on the Additional Layout Options button on the left.
• Under Caps Lock behavior select Caps Lock is also a Ctrl.

For older versions:

• Open tweak-tool and click on the typing section in the left column.
• You should now see the line Caps Lock key behavior on the left.
• Choose Make Caps Lock an additional Ctrl key instead of Disabled in the drop-down list and you should be good.

Enjoy your new Ctrl key!

Open the following for editing:

sudo vi /etc/default/keyboard

And edit XKBOPTIONS="ctrl:swapcaps"

Then, reconfigure:

sudo dpkg-reconfigure keyboard-configuration

or

/usr/bin/setxkbmap -option "ctrl:swapcaps"