如何下载macOS安装包及加入beta测试

下载完整安装包

# softwareupdate --fetch-full-installer --full-installer-version **.**.*

比如

# softwareupdate --fetch-full-installer --full-installer-version 10.15

加入开发者测试版

sudo /System/Library/PrivateFrameworks/Seeding.framework/Versions/A/Resources/seedutil enroll DeveloperSeed

加入公共测试版

sudo /System/Library/PrivateFrameworks/Seeding.framework/Versions/A/Resources/seedutil enroll PublicSeed

退出测试版

sudo /System/Library/PrivateFrameworks/Seeding.framework/Versions/A/Resources/seedutil unenroll