The drop down box will list all the OS X apps that can handle that file type. Choose the preferred program and it will instantly change the default Mac app for that file type. The Change All button will change all file types for that app so that any other customizations will revert back to defaults. Feb 08, 2016  Changing metadata on photo files,like date created. Discussion in 'Mac Basics and Help. I use 'file multi tool 5' app from the app store. Has lots of options for adjusting metadata, dates, etc. Change mouse cursor mac for video screenshot. That's my go-to. I had a folder of scans that I had been putting off date correction on, and just did a couple hundred files over Christmas.

Use a SmartArt graphic timeline to show a sequence of events, such as project milestones or events, in Office 2016 for Mac. You can choose a basic timeline or one of the other process-related graphics.

Mac OS X uses permissions to restrict access to applications, files, and folders. Utilizing this security control can help protect your data from unauthorized access. Whether you use your Mac in public places or share it with other users, you may want to change the permissions on your documents to ensure the confidentiality and integrity of your data. Of course, it can be difficult to strike a balance between convenience and security when using permissions. Users who are too restricted won’t be able to perform basic tasks.

And if you give users too much power, you risk privilege escalation or worse. Use trial and error to find an adequate level of security that everyone can live with. File Permissions Crash Course Every file and folder on your Mac has a configurable set of permissions.

Permissions control three types of access: reading, writing, and executing. You can mix and match any of the types to grant seven levels of access, as illustrated below. Read, write, and execute permissions overlap to create seven octal permission notations. You’ll learn how to modify permissions using the Info window in the next section. But to really leverage permissions, you need to learn the Unix-based symbolic and octal permission notations, which are hidden beneath the Mac OS X graphical user interface. All of the available permissions are shown in the table below.

Permissions No permission Execute Write Write and execute Read Read and execute Read and write Read, write and execute Octal Notation 0 1 2 3 4 5 6 7 Symbolic notation --- --x -w- -wx r-- r-x rw- rwx The Terminal application allows you to use octal notation to set permissions for the owner, a group, and everyone else. To create a “write only” drop box folder, you could set directory permissions to 622 to give the owner read and write permissions, and the group and everyone else write only permissions. The three groups of notations are shown below. Symbolic and octal permission notations for owner, group, and everyone. Mac OS X automatically sets permissions to limit a user’s access to system files and other user directories. If that protection isn’t good enough, you can change permissions to prevent other users from doing stuff like editing your 'Great American Novel,' reading private financial documents, or opening a specific application.