What is my shell?

````shell
echo "$SHELL"
```

**If your shell is ZSH**

````shell
brew install go --cross-compile-common
brew install hg bzr
mkdir "$HOME"/go
cat <<"EOF">>~/.zshrc
export GOPATH=$HOME/go
PATH=$PATH:$GOPATH/bin
EOF
````

**If your shell is BASH**

````shell
brew install go --cross-compile-common
brew install hg bzr
mkdir "$HOME"/go
cat <<"EOF">>~/.bashrc
export GOPATH=$HOME/go
PATH=$PATH:$GOPATH/bin
EOF
````