go env 源码
golang env 代码
文件路径：/test/env.go
// run
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test that the Go environment variables are present and accessible through
// package os and package runtime.
package main
import (
"os"
"runtime"
)
func main() {
ga := os.Getenv("GOARCH")
if ga != runtime.GOARCH {
print("$GOARCH=", ga, "!= runtime.GOARCH=", runtime.GOARCH, "\n")
os.Exit(1)
}
xxx := os.Getenv("DOES_NOT_EXIST")
if xxx != "" {
print("$DOES_NOT_EXIST=", xxx, "\n")
os.Exit(1)
}
}
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