sets up go on mac

go.sh

#!/bin/bash

# Check if Go is already installed
if go version &> /dev/null
then
    echo "Go is already installed. Exiting."
    exit 0
fi

# Set the version of Go to install
GO_VERSION="1.20.6" # replace this with the version you want

# Download and install Go
curl -O https://dl.google.com/go/go${GO_VERSION}.darwin-amd64.pkg
sudo installer -pkg go${GO_VERSION}.darwin-amd64.pkg -target /

# Set up the Go workspace
echo "Creating Go workspace directories at $HOME/go"
mkdir -p $HOME/go/{src,pkg,bin}

# Add GOPATH and Go bin directory to the PATH
echo "Adding GOPATH and Go bin directory to PATH in .bash_profile and .zshrc"
echo "export GOPATH=$HOME/go" >> ~/.bash_profile
echo "export PATH=\$PATH:\$GOPATH/bin:/usr/local/go/bin" >> ~/.bash_profile

echo "export GOPATH=$HOME/go" >> ~/.zshrc
echo "export PATH=\$PATH:\$GOPATH/bin:/usr/local/go/bin" >> ~/.zshrc

# Apply the new settings
source ~/.bash_profile
source ~/.zshrc

# Check the Go version
echo "Go version $(go version) has been installed."