go-switch

README.md

go-switch

Switching between Go version with ease

➜  ~ go-switch list
go1.13.15
go1.15
go1.16
go1.16.13
go1.17.1
go1.18.7

go-switch.sh

#!/bin/bash

go_version=$1
go_versions_path=""
go_symlink_path="/usr/bin/go"

if [[ "$go_version" == "" ]]; then
	echo "Empty Go version, please use: go-switch [[Go version]]"
	exit 1
fi

if [[ "$go_version" == "list" ]]; then
	ls $go_versions_path | egrep 'go.'
	exit 0
fi

# Check if version exists
if [[ -d "$go_versions_path/$go_version" ]]
then
    : # no-op
else
    echo "Go version of $go_version does not exist in $go_versions_path"
    echo "Existing versions in $go_versions_path:"
    echo $(ls $go_versions_path)
    exit 1
fi

# Replace existing Go in $GOROOT
rm -rf $go_versions_path/go
cp -r $go_versions_path/$go_version $go_versions_path/go

# Delete existing soft link
rm -f $go_symlink_path

# Create soft link
ln -s $go_versions_path/$go_version/bin/go $go_symlink_path

updated_go_version=$(go version)
if [[ "$updated_go_version" == *"$go_version"* ]]
then
    echo "Go version updated to: $go_version"
else
    echo "Error when updating Go version"
fi