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Using ttab in a Terminal Command with Workflows

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I want to make a workflow that opens several tabs in a Terminal window, each doing something different. I discovered this ttab project that seems to do what I want, but it's not working correctly in my Workflow.


When I enter a Terminal command as simple as ttab postgres -D /usr/local/var/postgres, the Workflow keeps executing the command over and over in new tabs, creating a race condition.


How can I get this to run the command once and stop? Or is there a better way in a Workflow to to open new Terminal tabs and execute commands within them?

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Not sure if this is exactly what you are after but it may help. It is an applescript I picked up somewhere.

tell application "Terminal"
	-- Get a window that's not busy.
	-- If there are no open windows, open one.
	if (count of windows) is greater than 0 then
		repeat with currentWindow in windows
			if currentWindow is not busy then
				set targetWindow to currentWindow
			end if
		end repeat
		do script ""
		set targetWindow to window 1
	end if
	-- Do command 1.
	set firstCommand to "ls"
	do script firstCommand in targetWindow
	-- Open a new tab.
	tell application "System Events" to tell process "Terminal" to keystroke "t" using command down
	-- Do command 2.
	set secondCommand to "pwd"
	do script secondCommand in targetWindow
	-- And so on...
end tell

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