Skip to main content

Field note

Getting Started With Go

184 words 1 min read

Go (or Golang) is a modern programming language created by Google, designed to be simple, fast, and reliable. If you want to try it out, you don’t need much — just a machine (Windows or Linux) and a bit of curiosity.

Example image

🛠 Installing Go On Windows

  1. Download Go from the official site.
  2. Run the installer and follow the defaults.
  3. Open PowerShell or Command Prompt and check:
go version

Create a file called hello.go:

package main

import "fmt"

func main() {
    fmt.Println("Hello, Go World!")
}

Run it with:

go run hello.go

Or I can build a binary

go build hello.go

.\hello.exe
Hello, Go World!

Let’s build a simple DIY tool: a command that greets you with your name.

package main

import (
    "fmt"
    "os"
)

func main() {
    if len(os.Args) < 2 {
        fmt.Println("Usage: greet <name>")
        return
    }
    name := os.Args[1]
    fmt.Printf("Hello, %s! Welcome to Go.\n", name)
}

As result we can pass argument to our tool

PS C:\Users\user\Desktop\GoLearn> go build .\tool.go
PS C:\Users\user\Desktop\GoLearn> .\tool.exe
Usage: greet <name>
PS C:\Users\user\Desktop\GoLearn> .\tool.exe Denis
Hello, Denis! Welcome to Go.
PS C:\Users\user\Desktop\GoLearn>