Script to generate a list of ports given a range

ports.go

package main

import (
	"os"
	"strings"
	"strconv"
	"fmt"
)

// go run ports.go 10-19

func main() {
	input := os.Args[1]

	lowHigh := strings.Split(input, "-")
	if len(lowHigh) != 2 {
		fmt.Fprintf(os.Stderr, "Failed to parse 1st arg: '%s'", input)
		os.Exit(1)
	}

	low, err := strconv.Atoi(lowHigh[0])
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to parse low port: '%s': %#v", lowHigh[0], err)
		os.Exit(1)
	}

	high, err := strconv.Atoi(lowHigh[1])
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to parse high port: '%s': %#v", lowHigh[1], err)
		os.Exit(1)
	}

	for i := low; i < high; i++ {
		fmt.Printf("\"%d:%d\", ", i, i)
	}
	fmt.Printf("\"%d:%d\"\n", high, high)
}