This section appears to the right of your pinned apps, separated by a divider, and updates automatically as you use different applications. You can use a terminal command to place your more recently used apps in the Dock.

Enable recent used apps in Mac Dock

• Open  ▸ System Settings
• Go to ‘Desktop & Dock’
• Enable the option ‘Show suggested and recent applications in Dock’

Adjust the number of recent used apps in Mac Dock

Copy and paste the following command into Terminal and press ENTER to execute the command.

defaults write com.apple.dock show-recents -bool true; defaults write com.apple.dock show-recent-count -int 5; killall Dock

After executing the command, the number of three recent apps will be changed to five. Is this still not enough? Then you can change the 5 in the above command to any desired number. Use 3 to change the number to the default settings.

source

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For example, this allows you to start an application slowly or open the launchpad super slow. Since macOS Sequoia, Apple has disabled this effect, but with a terminal command you can turn it back on.

Re-enable slow motion effects for macOS

Copy and paste the following command into Terminal and press ENTER to execute the command.

defaults write com.apple.dock slow-motion-allowed -bool YES;killall Dock

How to use

Once you have used the command and the effect is activated, you can open apps and other components on the screen in slow motion. To do this, hold down the SHIFT key and click on an app or something similar.

Revert to the default setting

Revert to the default setting and turn off the slow motion effect with the following command:

defaults write com.apple.dock slow-motion-allowed -bool NO;killall Dock

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Disable screenshot shadows on a Mac

defaults write com.apple.screencapture disable-shadow -bool true

To make the command take effect, you need to restart the System UI server:

killall SystemUIServer

Revert to the default setting (screenshots including shadows), To make the command take effect, you also need to restart the System UI server!

defaults write com.apple.screencapture disable-shadow -bool false

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Enable Sidecar on incompatible Macs

Use the following steps to activate Sidecar on incompatible Macs:

• Connect iPad to your Mac with the cable
• Open macOS Terminal and type the command below followed by enter

defaults write com.apple.sidecar.display AllowAllDevices -bool true; defaults write com.apple.sidecar.display hasShownPref -bool true; open /System/Library/PreferencePanes/Sidecar.prefPane

Enter your password if you are prompted and automaticly System Preferences opens. If the workaroud worked, you see a new option called ‘Sidecar’ and you can use this new feature too. If you do not see the option, it is unfortunately not possible to activate Sidecar. Restart your mac and try again. Of course it is important that you have a supporting iPad with iPadOS. Check this Apple document how to use sidecar.

Sidecar-supported iPad models

• 12.9-inch iPad Pro
• 11-inch iPad Pro
• 10.5-inch iPad Pro
• 9.7-inch iPad Pro
• iPad (6th generation or later)
• iPad mini (5th generation)
• iPad Air (3rd generation)
• All new iPads

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Change the layout of Launchpad

Use the following command in Terminal to change the layout of Launchpad. Change ‘X’ into the number of icons to be showed in a single row (e.g 9).

defaults write com.apple.dock springboard-columns -int X

Change ‘X’ to the number of rows (e.g 3).

defaults write com.apple.dock springboard-rows -int X

Force a restart of Launchpad with the following command to apply the changes:

defaults write com.apple.dock ResetLaunchPad -bool TRUE;killall Dock

Revert to the default setting with the following commands

defaults delete com.apple.dock springboard-rows
defaults delete com.apple.dock springboard-columns
defaults write com.apple.dock ResetLaunchPad -bool TRUE;killall Dock

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defaults -currentHost write com.apple.ImageCapture disableHotPlug -bool true

Revert to the default setting with the following command

defaults -currentHost delete com.apple.ImageCapture disableHotPlug

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You can enable a the quit option by entering the following command in Terminal:
defaults write com.apple.finder QuitMenuItem -bool true; killall Finder

To revert to the original settings:
defaults write com.apple.finder QuitMenuItem -bool false; killall Finder

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defaults write com.apple.dock single-app -bool true;killall Dock

When you click on an application in the Dock you’ll only see the windows of that application. All other windows are hidden in the background. You’ll be able to focus more on that one application without being distracted by any other applications in the background.

To revert to the original settings:

defaults write com.apple.dock single-app -bool no;killall Dock

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Thankfully, Apple is resolving this bug within 24 hours with a security update. Only this has created a new problem that affects a select number of users. If you use file sharing within your own network, this may stop working. You can easily solve this problem with a Terminal command.

Solution when File Sharing is no longer working

• Open Terminal (Finder ▸ Programs ▸ Utilities)
• Copy the following command (command⌘ + C)
• Paste the command into an empty terminal window (command⌘ + V)
• Press ‘enter’

sudo /usr/libexec/configureLocalKDC

Now enter your user password (from the account that is logged in), it is normal that no characters appear. Press ‘enter’ to execute the command. From now on file sharing works again and you can use it again as usual.

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Copy and paste the following command in OS X Terminal:

defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode -bool true
defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode2 -bool true

Revert to the default setting with the following commands:

defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode -bool false
defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode2 -bool false

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