Install/Update Golang version 1.12.5 on Fedora 28 and Later for arch x86_64

go-1.12.5-install.sh

#!/bin/bash
# To make this script executable, run: chmod u+x go-1.12.1-install.sh
# Will need to be executed as root user or with root privileges
# go command path: /usr/bin/go

# other dependencies
dnf install -y gcc
dnf install -y go-srpm-macros

# main dependencies for golang 1.12.1
GOLANG_SRC="https://rpmfind.net/linux/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/g/golang-src-1.12.5-1.fc31.noarch.rpm"
GOLANG_BIN="https://kojipkgs.fedoraproject.org/packages/golang/1.12.5/1.fc31/x86_64/golang-bin-1.12.5-1.fc31.x86_64.rpm"
GOLANG="https://kojipkgs.fedoraproject.org/packages/golang/1.12.5/1.fc31/x86_64/golang-1.12.5-1.fc31.x86_64.rpm"

# download rpm files
# https://stackoverflow.com/questions/592620/how-to-check-if-a-program-exists-from-a-bash-script 
if hash wget 2>/dev/null; then

  wget $GOLANG_SRC
  wget $GOLANG_BIN
  wget $GOLANG
  
else

  curl -O $GOLANG_SRC
  curl -O $GOLANG_BIN
  curl -O $GOLANG
  
fi

# https://access.redhat.com/solutions/1189
# upgrade or install verbosely with hash marks
echo "Installing Go version 1.12.5 -- assuming dependency files are the only ones named golang-* !"
rpm -Uvh golang-*

# test installation
go version

# Optional: setup go environment variables
# see all variables: go env
#
# echo 'export GOPATH=$HOME/go' >> ~/.bashrc
# echo 'export PATH=$PATH:$(go env GOPATH)/bin' >> ~/.bashrc