ubuntu 18.04 go install script

go.sh

#!/bin/bash
#version:1.0

#installing go 1.12.4
cd ~
curl -O https://dl.google.com/go/go1.12.4.linux-amd64.tar.gz
tar xvf  go1.12.4.linux-amd64.tar.gz
rm go1.12.4.linux-amd64.tar.gz
sudo chown -R root:root ./go
sudo mv go /usr/local
echo "export GOPATH=$HOME/work" >> .profile
echo "export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin" >> .profile
source .profile
mkdir $HOME/work

#validate working
mkdir -p work/src/github.com/user/hello
nano ~/work/src/github.com/user/hello/hello.go
cat <<EOF >> ~/work/src/github.com/user/hello/hello.gopackage main
import "fmt"

func main() {
    fmt.Printf("hello, world\n")
}
EOF
go install github.com/user/hello
hello