Thursday, September 5, 2013

Go Programming - Installation

I was playing with Go programming language (Golang) recently. Go looks like an interesting programming language.  I will show you how you can install Go in a 64 bit GNU/Linux system.

Installation

To install Go in a 64 bit GNU/Linux:
cd $HOME
wget -c https://go.googlecode.com/files/go1.1.2.linux-amd64.tar.gz
tar zxvf go1.1.2.linux-amd64.tar.gz
mkdir mygo
You can download source and binary packages of Go from from here: https://code.google.com/p/go/downloads/list
To set PATH and other environment variables, add these lines at the end of $HOME/.bashrc:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

export GOPATH=$HOME/mygo
export PATH=$PATH:$GOPATH/bin

Running a program

To run a program:
go run <program.go>
Here is an example hello world program:
package main

import "fmt"

func main() {
    fmt.Printf("Hello, world.\n")
}
Save the above code in a hello.go and run it like this:
go run hello.go

You can build (compile) and run the binary like this:
go build hello.go
./hello

Here is the screencast I created with same notes.


I am looking forward to your feedback.