The development history of MAC OS system

PrivateRelay is a privacy protection feature launched by Apple that hides user identities and browsing content through encryption and segmentation of network requests. The specific operation is divided into two steps: one is to encrypt the data and forward it through two relay servers. The first is to know the IP and the second is to know the content that does not know the user's identity; the second is to realize privacy isolation, and even Apple cannot obtain the complete record. Supported devices must meet: iOS15/iPadOS15/macOSMonterey and above systems, log in to AppleID and subscribe to iCloud services, and are only available for Safari browser. Its benefits include preventing ISP tracking, no additional settings are required, default activation, etc.; the limitation is that it does not support the wall surfing and only protects Safar.

To share files between two Macs on the same network, first make sure that the two devices are connected to the same LAN, then enable file sharing on the host, set shared folders and access permissions, and then connect from another Mac through the access sidebar or manually enter the SMB address, and finally you can browse, copy or transfer files. Common problems include waiting or restarting the network when the device cannot be discovered. If the permissions are incorrect, you need to check the username, password and sharing settings. If the connection fails, you can try the SMB address. If the firewall blocks, you can temporarily close the test.

To adjust the Dock on Mac according to usage habits to improve efficiency, you can follow the following steps: 1. Adjust the size and position: Go to "System Settings" > "Desktop and Dock", check "Automatic Show and Hide Dock", slide the bar to adjust the icon size; select the left, bottom or right place in "Dock Position". 2. Add or remove apps and folders: Drag the app from "Applications" to the Dock, and drag out the outside of the icon to remove the item. 3. Customize behavior and animation effects: Set click icon to display recent documents, window thumbnail previews, and use dividers or empty launchers to improve organization and quickly return to the desktop. Turning on the auto-hide function helps save screen space and make your work more focused.

If macOS no longer supports 32-bit programs, you can try the following methods: 1. Use a virtual machine (such as ParallelsDesktop or VMwareFusion to install the old version of macOS to run 32-bit programs. You need to prepare a Mac, virtual machine software and legacy system image with good performance; 2. Find a 64-bit updated version of the software or use alternative software, such as using GIMP or AffinityPhoto instead of the old version of Photoshop; 3. Install Windows through BootCamp on Intel Mac to run 32-bit applications, but the operation is complicated and the driver may be incompatible; 4. If the software is no longer maintained, you can only keep the old Mac running. Each method has its own advantages and disadvantages, and should be based on the technology

Do you often allow application permissions directly? In fact, permission management cannot be ignored because many requests are not reasonable. For example, if you want a location or a bookkeeping software to use a camera, this may cause privacy leakage or even identity theft. How to view adjustment permissions? Android path: Settings → App Management → Permission Management; iOS path: Settings → Find App → View Permission Switch. It is recommended to allow, regularly clean up sensitive permissions, and reject suspicious requests only during use. Permissions for special care include: 1. Camera, do not turn on unless necessary; 2. Microphone, prevent monitoring of the ambient sound; 3. Position, carefully select "always allow". Tips include item-by-item authorization, using reminder function, replacing high-permission apps, and regular physical examination permissions. In short, think more before authorization to avoid privacy exposure.

Apple computers can format the USB disk to FAT32 or exFAT through Disk Tools. 1. Open "Applications → Utility Tools → Disk Tools", and select it after inserting the USB disk; 2. Click "Erase", customize the name, and select the format (FAT32 is highly compatible but a single file does not exceed 4GB, exFAT has no such limitation and is suitable for large files); 3. Generally, select "GUID Partition Map" for partitioning schemes. If you encounter problems, you can try "MBR"; 4. After confirming the settings, click "Erase" to complete. If the FAT32 option cannot be found, you can choose "MS-DOSFAT" instead. If it is still not feasible, it may be because the system version is old or the USB drive is abnormal. You can try restarting, changing the device, or formatting it on Windows before bringing it back to your Mac for use. suggestion

To find the Library folder on your Mac, you can follow the following steps: 1. Open the Finder window; 2. Click "Go" in the top menu bar; 3. Press and hold the Option (⌥) key to make the "Library" option appear; 4. Click to enter the Library folder. This folder contains subfolders such as application support files, caches, preferences, logs, and keychains, and is suitable for debugging applications, clearing caches, or managing extensions. If you need frequent access, you can run the "chflagsnohidden~/Library/" command through the terminal to make it permanently displayed. If you hide it again, use "chflagshidden~/Library/".

To connect to a remote server using SSH from your Mac, just run the corresponding command through the terminal. First open the terminal program (you can search through "Applications" → "Utilities" or Spotlight), and then enter the command in sshusername@server_ip format. If you want to specify a non-default port, add the -p parameter. If you want to log in without password, you can execute ssh-keygen to generate the key, ssh-copy-id upload the public key to the server, and ensure that the server configuration allows key authentication. Common problems include network blockage, port not open, username errors and improper permission settings. It is recommended to use the ssh-v command to troubleshoot problems. Although the whole process is simple, you need to pay attention to the firewall and files