echo.go

package main

import (
        "os"
        "flag" // command line option parser
)

var omitNewline = flag.Bool("n", false, "don't print final newline")

const (
        Space   = " "
        Newline = "\n"
)

func main() {
        flag.Parse() // Scans the arg list and sets up flags
        var s string = ""
        for i := 0; i < flag.NArg(); i++ {
                if i > 0 {
                        s += Space
                }
                s += flag.Arg(i)
        }
        if !*omitNewline {
                s += Newline
        }
        os.Stdout.WriteString(s)
}