You can display additional information on the loginscreen of macOS. After applying the command you can click on the clock in the upper right corner, toggle between clock, IP address, macOS version and computer name. The information will be displayed for only 60 seconds.
Mr.R
Reverse dark mode to menubar and dock only
Mojave Dark Mode includes a new full Dark Mode. If this modes is to black for you, there is a possibility to reverse to the macOS High Sierra dark mode. The following procedure disables the full Mojave dark mode and only enables a dark menubar and dock just like macOS High Sierra.
Speed up Time Machine backups
Time Machine backups are great, but very slow when a large amount of data/files needs to be transferred (such as the initial back-up). As desgined by Apple the Time Machine background proces is running in a very low CPU priority, giving all other running applications en services priority.
Fix for not working Exposè/Mission Control
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:
Enable Reminders debug menu and force a manual update
Some of the built-in macOS applications have the possibility to activate a ‘special’ debug menu. One of these applications is Reminders, the debug menu gives you the option to manually Update/Refresh with your iCloud account.
Quit the Reminders application and start a Terminal window, apply the following command:
Toggle Safari DNS Prefetching
To improve performance Safari will attempt to prefetch DNS information. In some circumstances this can result in slow or partial webpage loading, or webpage cannot be found errors.
If you are experiencing those problems, apply this tweak to disable DNS prefetching.
Change OS X text cursor blink rate
There is no system preference setting for adjusting the cursor blink rate in OS X, as with many hidden settings you can change the blink rate directly using a defaults write command (OS X 10.9 and above).