Open a new Mac OS X terminal window or tab in the current dir

	#!/bin/sh
	#
	# Open a new Mac OS X terminal window or tab in the current or another
	# directory and optionally run a command in the new window or tab.
	#
	# - Without any arguments, the new terminal window opens in
	# the current directory, i.e. the executed command is "cd $PWD".
	# - If the first argument is a directory, the new terminal will "cd" into
	# that directory before executing the remaining arguments as command.
	# - The optional "-t" flag executes the command in a new tab
	# instead of a new window.
	# - The optional "-x" flag closes the new window or tab
	# after the executed command finishes.
	# - The optional "-p" flag takes an argument of the form x,y (e.g. 40,50) and
	# positions the terminal window to the indicated location on the screen
	# - The optional "-s" flag takes an argument of the form w,h (e.g. 800,400) and
	# resizes the terminal window to the indicated width and height in pixels.
	#
	# Written by Marc Liyanage <http://www.entropy.ch>
	#
	# Version 2.1
	#
	set -e
	while getopts xtp:s: OPTION; do
	[ $OPTION = "x" ] && { EXIT='; exit'; }
	[ $OPTION = "t" ] && { TAB=1; }
	[ $OPTION = "p" ] && { POSITION="set position of window 1 to {$OPTARG}"; }
	[ $OPTION = "s" ] && { SIZE="set size of window 1 to {$OPTARG}"; }
	done
	for (( $OPTIND; $OPTIND-1; OPTIND=$OPTIND-1 )); do shift; done

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in ~/.profile