To run it from command line or crontab:

osascript theAppleScript.scpt

Here’s the link.

However, both guides had something lacking from each other. The guide from macosxhints.com can’t be completed because I can’t find a function called rehash in Leopard and it can’t open a new terminal in another specified directory like the ones from tlrobinson.net. The guide from tlrobinson.net was almost perfect but it would fail to launch a new terminal if your current terminal path consist of spaces in the directory. (e.g. /directory1/directory with spaces/another directory). Therefore, I just merge both of their guides together to have the best of both worlds: 

#!/bin/sh

if [ $# -ne 1 ]; then
    PATHDIR=`pwd`
else
    PATHDIR=$1
fi

osascript << END
    tell app "Terminal" to do script "cd \"$PATHDIR\""
END

Just paste the above code in any directory you like. I created a folder ‘bin’ in my home directory to store all my custom executables and added the following into my .bash_profile:

export PATH="${HOME}/bin:${PATH}

I then also added the following in my .bash_profile

alias term="sh term.sh"

You can now either close your current terminal window and open a new one or do

source .bash_profile

to have the new changes in your .bash_profile to take effect on your current terminal.

With this, you can now open a new terminal window at your current directory with

term

or open a new terminal at another path with

term /somewhere/you/want/to/go

or even open multiple terminal windows with

term; term;

A majority of the guide above is taken from the authors of tlrobinson.net and macosxhints.com. Therefore, credits and appreciation must be given to both these sites: tlrobinson.net and macosxhints.com.

>sudo update_prebinding -root /Volumes/NameOfDrive -force

Once that’s done, reboot your Mac with your cloned drive and everything should be up and running!

tip: If you’re using an Intel Mac, you can boot your Mac with an External HDD (USB or Firewire) by pressing the Option key when you first turn on your Mac.