table of content
# Allow to open app everywhere
# disable the master, you are able to open any app everywhere
sudo spctl --master-disable
# enable the master, you will be notified, and you are not able to open the app that is downloaded from internet
sudo spctl --master-enable
# screenshot
## size: 680KB
defaults write com.apple.screencapture type jpg
## size: 3.4MB
defaults write com.apple.screencapture type png
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