Can't reinstall or uninstall Homebrew after bl

Question

I removed ALL content from /usr/local/bin folder (including 'brew'). Homebrew isn't working anymore and I seem to be stuck in a limbo. When I try to install it says:

It appears Homebrew is already installed. If your intent is to reinstall you should do the following before running this installer again: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"

When I run the given uninstall command it says:

Failed to locate Homebrew!

Background

The problem arose when I attempted to remove node.js by following this guide: https://stackoverflow.com/a/11178106/1736012

To completely uninstall node + npm is to do the following:

1. go to /usr/local/lib and delete any node and node_modules
2. go to /usr/local/include and delete any node and node_modules directory
3. if you installed with brew install node, then run brew uninstall node in your terminal
4. check your Home directory for any local or lib or include folders, and delete any node or node_modules from there
5. go to /usr/local/bin and delete any node executable

Especially 5 was bad! That's what led me to remove everything under /usr/local/bin. So brew doctor won't work (brew isn't recognized anymore). Brew worked fine before this.

What I tried

This does not work either as brew is missing:

rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install )"

I tried various scripts like this one for example: https://apple.stackexchange.com/a/85481. And this: https://gist.github.com/SteveBenner/11254428. None of them is working (both assumes that brew command is there)...

What can I do to re install Homebrew so that it works as before??

Answer 1

This should bring back a working brew command:

cd /usr/local
git init
git remote add origin https://github.com/Homebrew/homebrew
git pull origin master

Next I would check the output of brew doctor and see if there are major problems. There is an official uninstalling guide on homebrew's github wiki in case you want to completely uninstall.