Go for Small Ops Tools

First PublishedMar 30, 2026ByAtif Alam

Go is a compiled language with a single static binary — convenient for CLI tools you ship to jump hosts, CI images, or bastions. This page is a minimal on-ramp; it complements the Prometheus Go client snippet in Exporters.

When Go Helps

Use Go	Use Bash or Python instead
Fast CLI with few dependencies	One-off glue, aws CLI wrappers — Bash scripting
Concurrent HTTP checks or workers	Quick data analysis — Python
Same binary on Linux amd64/arm64	Team only knows Python

Install Toolchain

Download from go.dev or use a package manager:

brew install go   # macOS

Verify:

go version

Hello Module

mkdir -p ~/src/helloctl && cd ~/src/helloctl
go mod init example.com/helloctl

main.go:

package main

import (
  "flag"
  "fmt"
  "os"
)

func main() {
  name := flag.String("name", "world", "who to greet")
  flag.Parse()
  fmt.Fprintf(os.Stdout, "hello, %s\n", *name)
}

go run .
go build -o helloctl .
./helloctl -name=ops

Modules and Vendoring

• go mod tidy — Add/remove requirements from imports.
• go get package@version — Pin dependencies.
• Private modules — Set GOPRIVATE for internal Git hosts.

HTTP Client (Sketch)

resp, err := http.Get("https://example.com/health")
if err != nil {
  log.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
  log.Fatalf("status %d", resp.StatusCode)
}

Use context with timeouts for production tools.

Cross-Compile

GOOS=linux GOARCH=amd64 go build -o helloctl-linux .

Summary

Go shines for small, distributable CLIs and concurrent network utilities. For infra definitions, still prefer Terraform and declarative config — see Terraform.