Macos – How to open a folder in OSX using the keyboard

In OSX there's no such thing as the "_" for dialogs like in Windows. However, you have:

esc → defaults to no/cancel

cmd + del → don't save (cmd + d before OS X Lion)

enter → save/OK

spacebar → click selected button (use tab to move).

A quick Google search for "osx keyboard shortcuts" will teach you way more than you can memorize in one day, but you should; there are dozens and some are very valuable.

You can always add more/change some existing ones by going to System Preferences -> Keyboard & Mouse -> Keyboard Shortcuts, exactly where you activated "all controls".

But as far as I know, there's no "underscore" thing in OSX.

From Mac OSX Keyboard Commands:

Full Keyboard Access (see Chapter 3)

  control+F1

    Toggle Full Keyboard Access on/off

  control+F2 (or control+M)

    Focus keyboard control on menu bar

  control+F3 (or control+D)

    Focus keyboard control on Dock

  control+F4 (or control+W)

    Focus keyboard control on active Window or cycle to next window

  control+F5 (or control+T)

    Focus keyboard control on toolbar

  control+F6 (or control+U)

    Focus keyboard control on palette (utility window)

  control+F7

    In windows and dialogs, switch focus to text boxes/lists/controls

  arrow keys

    Navigate active item

  return, enter, or spacebar

    Select highlighted item

  return or enter

    Select default dialog control (OK, Yes, No, Save, Open, etc.)

  escape

    Cancel action, menu, or dialog

control+F1 to enable Full Keyboard Access (only needed once), then

control+F2 (or control+M) is the command you are looking for.