问题
As subject says, running
brew doctor
responds with following warnings:
Warning: /usr/bin occurs before /usr/local/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:
...
Warning: Homebrew's bin was not found in your PATH.
....
Warning: Homebrew's sbin was not found in your PATH but you have installed
formulae that put executables in /usr/local/sbin.
However, when I echo PATH, it shows /usr/local/bin as being before /usr/bin
/Users/bryce/.nvm/v0.10.32/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/bryce/bin:/Users/bryce/.rbenv/bin:/Users/bryce/.rbenv/shims:/Users/bryce/opt/Sencha/Cmd/4.0.0.203:/Users/bryce/Development/tools/apache-maven-3.1.1/bin:/opt/X11/bin:/usr/local/git/bin:/Users/bryce/.homesick/repos/bzdots/custom/bin
I'm running ZSH, iTerm on Mac OS X (Yosemite). Gut feeling is that these warnings aren't really important to me, but the OCD part of me wants to get rid of all warnings....
UPDATE: Francisco below had the right idea. Turns out, I think it was an iTerm issue. I found the following while researching another issue I was looking for. So, I just changed the default profile's command from "Login shell" to:
/bin/bash -c /bin/zsh
And its all happy.
回答1:
My best guess is that your PATH settings are dependent on whether your shell is running interactively or non-interactively?
Try running both:
zsh -i -c "echo \$PATH"
zsh -c "echo \$PATH"
and see if the output differs. Brew is likely reporting on your non-interactive path.
来源：https://stackoverflow.com/questions/26507037/brew-usr-bin-occurs-before-usr-local-bin