Programmatically switch between your first 16 desktops in OS X Mavericks and Yosemite

switch.sh

#!/bin/bash
#
# switch.sh
# Allows for scripting the switching of the first 16 "Desktops" in OS X Mavericks
#
# Requires Mission Control Keyboard Shortcuts to be activated:
# Go to System Preferences -> Keyboard -> Shortcuts -> Mission Control.
# Click the expand Triangle next to Mission Control in the right hand pane.
# Activate "Switch to Desktop { 1-16 }
#
# Script assumes that the keyboard shortcuts are set to the default of ^1-9
# for the first nine desktops, ^0 for desktop 10 and finally ^opt1-6 for
# the remaining six desktops up to 16.
#
# v1.0 3014-05-27 by bill@wellingtonnet.net

# Keycode Mappings (for reference)
# -----------------
# | Key | Keycode |
# | 1   | 18 |
# | 2   | 19 |
# | 3   | 20 |
# | 4   | 21 |
# | 5   | 23 |
# | 6   | 22 |
# | 7   | 26 |
# | 8   | 28 |
# | 9   | 25 |
# | 0   | 29 |

switch()
{

DESKTOP=$1

# Build the array of desktop keycodes
DESKTOPS=(18 19 20 21 23 22 26 28 25 29)

if [[ $DESKTOP -le 10 ]]; then
    INDEX=$(($DESKTOP - 1))
    KEYCODE=${DESKTOPS[$INDEX]}
    osascript <<EOF
    tell application "System Events"
        key code "$KEYCODE" using control down
    end tell
EOF

elif [[ $DESKTOP -gt 10 ]]; then
    INDEX=$(($DESKTOP - 10))
    KEYCODE=${DESKTOPS[$INDEX]}
    osascript <<EOF
    tell application "System Events"
        key code "$KEYCODE" using {control down, option down}
    end tell
EOF

else
    echo 'your display is not supported'

fi

}

# Allow script to be called directly
if [[ $0 == *switch.sh  ]]; then
    switch $1
fi