@cnmusa 官网上 FAQ 有解释

@ruby109 brew doctor

@cnmusa 是的。所以这个包管理器还有 cellar 和 keg 等组件

这种升级方式……

感谢提醒

安装后下一步是卸载

以前也是得自己下……

有必要顶一下这个帖子

@crayhuang
@xcv58 /t/307903

@crayhuang
@xcv58 t/307903

@DGHeaven 我觉得以前这种方式不好。新系统算是改进

@surefire 每次买苹果，我都让店员咬一口再买！完整的苹果肯定是假的，不能吃

@lln133208 不知道，我也想问

@cairnechen brew update 即可。再有问题参见 11 楼

@likaci 上划开启，下滑关闭。

时经贴

@windirt
@brq417059
官方论坛里有人的回复：
I re-read the Homebrew 1.0.0 announcement again and noticed the following bullet point:

brew update sped up by only running git fetch if necessary

So I cd'ed to /usr/local/Homebrew and executed
git fetch
which yielded:
From https://github.com/Homebrew/brew
* [new tag] 1.0.2 -> 1.0.2

Then after running brew update twice, I no longer see the message about "To checkout v1.0.1" again.

It seems that maybe the stock brew update needs to run git fetch in more cases than it thinks it does?

@brq417059 不知道
@windirt 同，我也不清楚