在使用brew安装软件时报错Failed to upgrade Homebrew Portable Ruby!
brew install --cask --appdir=/Applications docker
==> Downloading https://ghcr.io/v2/homebrew/portable-ruby/portable-ruby/blobs/sha256:0cb1cc7af109437fe0e020c9f3b7b95c3c709b140bde9f991ad2c1433496dd42
Already downloaded: /Users/zhanghe/Library/Caches/Homebrew/portable-ruby-2.6.8.yosemite.bottle.tar.gz
Error: Checksum mismatch.
Expected: 0cb1cc7af109437fe0e020c9f3b7b95c3c709b140bde9f991ad2c1433496dd42
Actual: f3d9a51cb325eb9fb4cf098821c11cc7299cda637fb5e4c23a846a7390c305cd
Archive: /Users/zhanghe/Library/Caches/Homebrew/portable-ruby-2.6.8.yosemite.bottle.tar.gz
To retry an incomplete download, remove the file above.
Error: Failed to upgrade Homebrew Portable Ruby!
将已存在的文件删除掉即可
rm -rf /Users/zhanghe/Library/Caches/Homebrew/portable-ruby-2.6.8.yosemite.bottle.tar.gz
https://zhhll.icu/2020/Mac/brew使用失败/文章来源：https://www.toymoban.com/news/detail-631663.html
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