$ sudo tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz
$ export PATH=$PATH:/usr/local/go/bin
$ tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz
$ export GOROOT=$HOME/go
$ export PATH=$PATH:$GOROOT/bin
$ export GOPATH="$HOME/work"
$ export GOBIN="$GOPATH/bin"
$ mkdir -p $GOPATH/src
$ mkdir $GOBIN