When installing Xcode, I downloaded an Xcode installation file from the official website, but this file is a (.xip) compressed file.
Decompression method:
- Open the shell in the downloads directory
- Remove decompression verification:
xattr -d com.apple.quarantine Xcode_12.3.xip
localhost:Downloads lichenxia$ xattr -d com.apple.quarantine Xcode_12.3.xip