Go: The Cross-Platform Development Weapon You've Underestimated

Go: How to Forget "It Works on My Machine" and Start Conquering Worlds

Have you ever written a cool Python script, sent it to a friend on Windows, and they reply: "It doesn't run, some Python is not installed"? Sound familiar? Welcome to dependency hell, virtual environments, and interpreter version nightmares. Now imagine: you write the code once, press one button — and get a binary that runs on Windows, Linux, and macOS without installing anything. No Python, no Node, no JVM.

This isn't science fiction. This is cross-platform development in Go — a language built specifically to solve these problems. If you write in Python and are tired of dancing around dependencies, or if you're simply looking for a tool to create fast and portable utilities — Go will become your new best friend. In this article, we won't beat around the bush. We'll break down real examples, show code, and tell you how to make your program run everywhere there's a processor.

Why Go is the Ideal Choice for Cross-Platform Development?

In the world of Golang cross-platform, it's not a feature, it's a foundation. Unlike Python, which requires an interpreter, or Java, which needs a virtual machine, Go compiles to native machine code. This means your binary contains everything needed to run: runtime, garbage collector, and your code. No external libraries, no "pip install". Download and run.

But the main thing is Go cross-compilation. You sit on a MacBook, write code, and then with one command build an executable for Windows, Linux, Raspberry Pi (ARM), or even ancient FreeBSD. You don't need a virtual machine or Docker to build. One environment variable — and it's done.

For a Python developer, this sounds like magic, but it's just Go. Let's move to practice.

Writing a Cross-Platform Utility in Go

Let's imagine we need to write a simple but useful program: it will collect system information (OS, architecture, hostname) and save it to a JSON file. This is a classic task for DevOps or system administrators. In Python, you'd drag in platform and json, but in Go it looks even more elegant.

Step 1: Structure and Imports

Create a file main.go. The first thing we'll do is define a data structure and use the runtime and os packages to get system information. Note: runtime.GOOS and runtime.GOARCH are built-in constants that Go knows at compile time.

package main\n\nimport (\n    "encoding/json"\n    "fmt"\n    "os"\n    "runtime"\n)\n\ntype SystemInfo struct {\n    OS         string `json:"os"`\n    Arch       string `json:"arch"`\n    Hostname   string `json:"hostname"`\n    GoVersion  string `json:"go_version"`\n}

Step 2: Collecting Information

Now let's write a function that collects data. We'll use os.Hostname() — it's cross-platform and works on all systems.

func getSystemInfo() (SystemInfo, error) {\n    hostname, err := os.Hostname()\n    if err != nil {\n        return SystemInfo{}, fmt.Errorf("error getting hostname: %w", err)\n    }\n\n    return SystemInfo{\n        OS:        runtime.GOOS,\n        Arch:      runtime.GOARCH,\n        Hostname:  hostname,\n        GoVersion: runtime.Version(),\n    }, nil\n}

Step 3: Writing to JSON

Let's complete our program: get the information, encode it to JSON, and write it to a file. We'll also add error handling — this is good practice in cross-platform development in Go, as file paths differ across different OS.

func main() {\n    info, err := getSystemInfo()\n    if err != nil {\n        fmt.Printf("Error: %v\\n", err)\n        os.Exit(1)\n    }\n\n