寻求一些关于如何修复/usr/bin目录权限的指导。事实上，我最近在我的计算机上进行了数据恢复，我必须将我的整个主目录复制到一台新 Mac 上。
此时，我注意到，/usr/local迁移数据之前文件夹中的旧二进制文件已无法运行。
我也没有brew，而且无法安装它。
尝试chown /usr/local也失败了
% sudo chown -R "$USER":admin /usr/local
chown: /usr/local: Operation not permitted
当我注意到 brew 未安装时，这种情况首次发生。当我尝试安装 brew 时，出现以下信息：
% /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
==> Checking for `sudo` access (which may request your password).
Password:
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
==> The following new directories will be created:
/usr/local/bin
/usr/local/sbin
Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/mkdir -p /usr/local/bin /usr/local/sbin
mkdir: /usr/local/bin: Not a directory
mkdir: /usr/local/sbin: Not a directory
Failed during: /usr/bin/sudo /bin/mkdir -p /usr/local/bin /usr/local/sbin
这是我的ls -aleO@ /usr/local
total 52960
drwxr-xr-x 14 root wheel sunlnk 448 Feb 24 19:19 .
drwxr-xr-x@ 11 root wheel restricted,hidden 352 Feb 18 16:51 ..
com.apple.rootless 0
drwxr-xr-x 2 myuser.user admin - 64 Feb 24 19:19 Caskroom
drwxr-xr-x 2 myuser.user admin - 64 Feb 24 19:19 Cellar
drwxrwxr-x 2 myuser.user admin - 64 Feb 24 19:19 Frameworks
-rwxrwxr-x@ 1 myuser.user admin - 12434524 Feb 23 21:11 bin
com.apple.quarantine 57
drwxrwxr-x 2 myuser.user admin - 64 Feb 24 19:19 etc
drwxr-xr-x 20 myuser.user admin - 640 Feb 16 11:12 go
drwxrwxr-x 2 myuser.user admin - 64 Feb 24 19:19 include
drwxrwxr-x 2 myuser.user admin - 64 Feb 24 19:19 lib
drwxrwxr-x 2 myuser.user admin - 64 Feb 24 19:19 opt
-rwxrwxr-x@ 1 myuser.user admin - 14033312 Feb 23 21:44 sbin
com.apple.quarantine 57
drwxrwxr-x 3 myuser.user admin - 96 Feb 24 19:19 share
drwxrwxr-x 3 myuser.user admin - 96 Feb 24 19:19 var```
答案1
我需要删除 /usr/local/bin 和 /usr/local/sbin。删除后，我就可以安装 homebrew 了。看来我已经有指向此目录的符号链接。