Did you know you can add the Quit option to the Finder’s application menu? This allows you to easily quit the application. After quitting you can restart Finder by clicking on the Finder icon in the Dock.
10.6
Show one application at a time
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:
Reset OS X/macOS Dock to default settings
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.
Display the file extensions in Finder
File extensions (.jpg, .txt, .pdf, etc) are normally hidden by default in OS X. You can either set all extensions to be displayed through the following command:
Use plain text as default format in TextEdit
TextEdit is a simple application for quickly writing text and notes. The text can be edited in RTF (Rich Text Format) mode, as well as plain text. With the following defaults write command you can enable plain text as default format in TextEdit.
Removing the date and time Stamp from Screenshots
By default, screenshots (cmd⌘ + shift⇧ + 3) are saved on your desktop along with the date and time they were taken. It’s possible to to remove the date and time stamp from the file names of screenshots, use the following command in Terminal: