Workflow
Open any file with any application
Just drag the file onto the app’s icon while holding down Command + Option
keys. The application will attempt to open the file, and sometimes succeed :)
UI
Dock spacing
Add a blank space in your dock. Create multiple spaces and move them around to create the illusion of categories. In your terminal:
defaults write com.apple.dock persistent-apps -array-add '{tile-data={}; tile-type="spacer-tile";}'
Then run killall Dock
to restart the dock.
File Management
Copy the present working directory into Mac OS X clipboard
pwd|pbcopy
View a debug file in the terminal
tail -f file.txt
Get the size of current directory
du -ch | grep total
Networking
Clear the DNS cache in Yosemite and later
sudo killall -HUP mDNSResponder