How to properly install Go Language in Ubuntu?

The problem is your GOROOT. It should be set to /usr/lib/go (not /usr/share/go).

export GOROOT=/usr/lib/go

Installation

1. Update.

   sudo apt-get update 
   

2. Install Go language.

   sudo apt-get install golang
   

3. Set GOPATH to your home folder. After this action, you can use command echo $GOPATH to check the go path location.

   export GOPATH=$HOME/gopath
   

4. For the GOPATH, it is not required to define it. But you can still define it.

   # Get the go installation root path.
   go env GOROOT
   
   # Set the result of `go env GOROOT` to system variable GOROOT.
   # In this example, the result of `go env GOROOT` is `/usr/lib/go-1.6`
   export GOROOT=/usr/lib/go-1.6
   

Checking Go Environment Variables

1. Use command go env and you will get:

   GOARCH="amd64"
   GOBIN=""
   GOEXE=""
   GOHOSTARCH="amd64"
   GOHOSTOS="linux"
   GOOS="linux"
   GOPATH="/home/casper/gopath"
   GORACE=""
   GOROOT="/usr/lib/go-1.6"
   GOTOOLDIR="/usr/lib/go-1.6/pkg/tool/linux_amd64"
   GO15VENDOREXPERIMENT="1"
   CC="gcc"
   GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
   CXX="g++"
   CGO_ENABLED="1"
   

2. Now you can see that:

   a. GOPATH is in /home/casper/gopath.

   b. GOROOT is in /usr/lib/go-1.6.

References

• Install package golang
  https://github.com/golang/go/wiki/Ubuntu

• You don’t need to set GOROOT, really
  http://dave.cheney.net/2013/06/14/you-dont-need-to-set-goroot-really

• Getting Started - The Go Programming Language
  https://golang.org/doc/install