If your Mac stops freezing then something you installed is broken under the new OS. The 3rd thing I would try is one of the OS 'cleaning' tools. I use Onyx (there are others, that's my favorite). Download it, and run the automation tool, then reboot your Mac. Let us know the results by editing your question to indicate what you have tried. Mac windows brightness. When you think of, you probably imagine sitting in front of their computer in a dimly lit room trying to break into an FBI database. In reality, it's just a simple tool that can make using your Mac much easier. Now, I'm not saying that learning Terminal commands is easy, but using them definitely is. I've compiled a list of some basic commands that will get you started on your journey to mastering Mac OS X, whether it's Mavericks, Yosemite, or even an older system like Lion. • Don't Miss: • Don't Miss: I've run all of these commands on my MacBook running Yosemite, but if you are an, your mileage may vary due to the fact that it's an early beta still. #1: Restart Your Mac Automatically After It Freezes Macs may be reliable, but they have been known to freeze up on occasion. If you'd rather not deal with having to manually force a shutdown, you can use this Terminal command to make OS X instantly reboot on a freeze. • sudo systemsetup -setrestartfreeze on #2: Check for Software Updates Daily By default, the Mac App Store checks for updates on a weekly basis, but if you'd rather get app updates as soon as possible, you can use this command to have it check daily. • defaults write com.apple.SoftwareUpdate ScheduleFrequency -int 1. #3: Change Screenshot File Type If you don't like that screenshots are saved as PNG files on your Mac, you can switch it to either BMP, GIF, JPG, PDF, or TIFF instead. Just be sure to change the 'png' portion of the below command to your desired file extension. • defaults write com.apple.screencapture type -string 'png' #4: Change Screenshot Location Don't like screenshots cluttering up your desktop? You can change the save location using the following command. Just swap out the '/folderlocation' part with the full location of the folder you want. • defaults write com.apple.screencapture location /folderlocation Note: see the end of this guide for instructions on using folder locations with spaces in their name. #5: Show All Hidden Files & Folders Unlike in Windows, there is no option to view hidden files and folders in Mac OS X, unless you know the exact location. But by using this Terminal command, you can make them all visible. To hide them again, change 'true' to 'false.' • defaults write com.apple.finder AppleShowAllFiles -bool true To see the changes appear immediately, make sure to hold 'Alt' on your keyboard, right-click on Finder in your Dock, then click on 'Relaunch.' #6: Hide or Unhide Files & Folders Individually If you don't want to see every hidden file and folder on your Mac, you can unhide them one by one instead. As an example, the Library folder is the biggest one that most people want to unhide, so let's do that. (Note that ~ is a shortcut for your main username directory.) • chflags nohidden ~/Library/ Now let's try it with a file.
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