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// Copyright 2018 The Cockroach Authors.
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.
package cmdutil
import (
// RequireEnv returns the value of the environment variable s. If s is unset or
// blank, RequireEnv prints an error message and exits.
func RequireEnv(s string) string {
v := os.Getenv(s)
if v == "" {
log.Fatalf("missing required environment variable %q", s)
return v
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