In macOS and OS X it’s possible to show one application at a time. You can enable a ‘single application’ mode by entering the following command in Terminal:
Using the the F3-key should normally activate Exposè/Mission Control. In some circumstances nothing happens when you hit the F3-key or the four finger up gesture.
To solve this problem apply the following defaults write command:
There is a Terminal command that you can use to quickly make your dock look like new again. Do you experience problems with the Dock on your Mac? The best you can do is to reset it to default settings.
The following Terminal command will reset your dock by removing any icons that you’ve added and removed. It’ll also reset the size of the dock, magnification settings, and its location.
Through the system preferences you can adjust the size of the Dock icons. Unfortunately, you can’t go larger than 256 pixels. With the following command you can change the size in different sizes.
Did you know that you can customize the Dock in OS X through terminal? With the following defaults write you can add a blank space to the Dock. This is a better way to organize applications.
Do you want to keep the Dock in OS X organized? You can do this with a blank space. This way, you can divide your Dock in different groups. Copy and paste the following command in a Terminal window. After the restart, the space will be added to the Dock, which you can move to any place.
You can choose to hide/show the Dock automatically. This has a default speed to display the dock. You can speed it up with a defaults write command. This command removes the delay from when a cursor is hovered near the Dock. It doesn’t change the animation speed of the dock, only the response to the cursor.