Swap Control and Caps in Virtual Console

Dump the current keymap:

sudo dumpkeys > /usr/share/kbd/keymaps/my_keymap

Edit my_keymap mapping keycode 29 to Caps_Lock and keycode 58 to Control:

keycode 29 = Caps_Lock
keycode 58 = Control

To apply the changes temporarily:

sudo loadkeys /usr/share/kbd/keymaps/my_keymap

To apply the changes permanently, add the following line to /etc/vconsole.conf:

KEYMAP=my_keymap