I've spent the bulk of my Friday trying to get the latest version of Ruby installed on my new MacBook Air (w/ Mountain Lion installed).
I have all the latest versions of XCode and command line tools. But I can't seem to get Homebrew to work! Here's a screenshot of where I keep getting stuck (I'm a new user, so can't embed this image).
As you can see I used the following to instal Homebrew:
ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go/install)"
While there was a "warning" it seemed as though the installation worked:
Warning: /usr/local/bin is not in your PATH.
==> Installation successful!
Despite that, when I try to run "brew doctor" I received the following:
-bash: brew: command not found
Again, I'm trying to install homebrew, so i can instal the latest version of ruby -- I'm looking to learn to code in ruby, but kind of screwed if I can even get a development environment running! :)
The warning is telling you what is wrong. The problem is that brew is kept in /usr/local/bin
So, you can try /usr/local/bin/brew doctor
To fix it permanently alter your bash profile (.bashrc or .profile in your home directory) and add the following line:
export PATH=/usr/local/bin:$PATH
Check XCode is installed or not.
gcc --version
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew doctor
brew update
http://techsharehub.blogspot.com/2013/08/brew-command-not-found.html "click here for exact instruction updates"
nano ~/.profile
add these lines:
export PATH="$HOME/.linuxbrew/bin:$PATH"
export MANPATH="$HOME/.linuxbrew/share/man:$MANPATH"
export INFOPATH="$HOME/.linuxbrew/share/info:$INFOPATH"
save the file:
Ctrl + X then Y then Enter
then render the changes:
source ~/.profile
This was just happening to me, but none of the suggestions above worked. I changed directories ("cd ~/tmp") and suddenly the command
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
worked for me. Prior to changing directories I had been in a directory that is a Git repository. Perhaps that was interfering with the ruby and Git commands in the Brew install script.
You can run in terminal
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/linuxbrew/go/install)"
then install https://github.com/robbyrussell/oh-my-zsh.
When those complate run i.e pico editor pico .zshrc and past those lines:
export PATH="$HOME/.linuxbrew/bin:$PATH"
export MANPATH="$HOME/.linuxbrew/share/man:$MANPATH"
export INFOPATH="$HOME/.linuxbrew/share/info:$INFOPATH"
remember use brew doctor :)
try this
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/linuxbrew/go/install)"
You can use this:
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
to install homebrew.
来源：https://stackoverflow.com/questions/14288682/error-installing-homebrew-brew-command-not-found