Applescript to open a NEW terminal window in current space

tell application "Terminal"  
    do script " "  
    activate  
end tell

It seems weird but it takes advantage of an oddity in how Terminal handles incoming "do script" commands; it creates a new window for each one. You could actually replace that with something useful if you want; it'll execute whatever you want just after opening the new window.

If you don't have any text in-between the do script " " you won't get an extra command prompt in the terminal.

tell application "Terminal"  
    do script ""  
    activate  
end tell

I can think of three different ways to do it (the first two stolen from somewhere else but I forget where). I use the third one, which calls a shell script from the applescript, because I want to open a new window every time and because it was the shortest.

Unlike the script built into OS X since at least 10.10, all of these open the terminal in whatever directory is the current working directory in your finder window (i.e. you don't have to have a folder selected in order to open it).

Also included a couple of bash functions to complete the Finder > Terminal > Finder circle.

1. Reuse an existing tab or create a new Terminal window:

tell application "Finder" to set myDir to POSIX path of (insertion location as alias)
tell application "Terminal"
    if (exists window 1) and not busy of window 1 then
        do script "cd " & quoted form of myDir in window 1
    else
        do script "cd " & quoted form of myDir
    end if
    activate
end tell

2. Reuse an existing tab or create a new Terminal tab:

tell application "Finder" to set myDir to POSIX path of (insertion location as alias)
tell application "Terminal"
    if not (exists window 1) then reopen
        activate
    if busy of window 1 then
        tell application "System Events" to keystroke "t" using command down
    end if
    do script "cd " & quoted form of myDir in window 1
end tell

3. Generate a new window each time via a shell script called from an applescript

tell application "Finder"
    set myDir to POSIX path of (insertion location as alias)
    do shell script "open -a \"Terminal\" " & quoted form of myDir
end tell

4. (BONUS) Bash alias to open a new finder window for the current working directory in your terminal

Add this alias to your .bash_profile.

alias f='open -a Finder ./' 

5. (BONUS) Change directory in your terminal window to the path of the front Finder window

Add this function to your .bash_profile.

cdf() {
      target=`osascript -e 'tell application "Finder" to if (count of Finder windows) > 0 then get POSIX path of (target of front Finder window as text)'`
        if [ "$target" != "" ]; then
            cd "$target"; pwd
        else
            echo 'No Finder window found' >&2
        fi
}