OS X Here you can find all the posts taged with OS X. A more powerful version of grep The utility command grep has a more powerful brother that let us use POSIX Extended Regular Expressions. Display disk usage with the du command How to display the total of the current directory or a particular directory, as well as listing subtotals (subdirectories). Hide the desktop icons on Mac OS X A two step way using the defaults command to hide the icons from the desktop in Mac OS X. How to open the iOS Simulator via the terminal The simulator can be super useful, but equally super hard to find. Here is the path and how to open it.