libgo/go/cmd/go/internal/version/version.go

   1 // Copyright 2011 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Package version implements the ``go version'' command.
   6 package version
   7
   8 import (
   9         "fmt"
  10         "runtime"
  11
  12         "cmd/go/internal/base"
  13 )
  14
  15 var CmdVersion = &base.Command{
  16         Run:       runVersion,
  17         UsageLine: "go version",
  18         Short:     "print Go version",
  19         Long:      `Version prints the Go version, as reported by runtime.Version.`,
  20 }
  21
  22 func runVersion(cmd *base.Command, args []string) {
  23         if len(args) != 0 {
  24                 cmd.Usage()
  25         }
  26
  27         fmt.Printf("go version %s %s/%s\n", runtime.Version(), runtime.GOOS, runtime.GOARCH)
  28 }