/bin/sh^M: bad interpreter: No such file or directory

Question

When I enter brew doctor (or any brew command) in my terminal, I get this as a response:

-bash: /usr/local/bin/brew: /bin/sh

Answer 1

I don't know how carriage returns ended up in your brew file, but you can remove them using dos2unix or by piping it through tr -d '\r'.

Example:

tr -d '\r'  < /usr/local/bin/brew   > myfixedbrew

Once verified, you can use

mv myfixedbrew /usr/local/bin/brew && chmod a+x /usr/local/bin/brew 

to replace the old one.