func os.LookupEnv

5 uses

	os (current package)
		env.go#L112: func LookupEnv(key string) (string, bool) {

	github.com/gotd/td/telegram
		builder.go#L26: 	dir, ok := os.LookupEnv("SESSION_DIR")
		builder.go#L50: 		sessionFile, ok := os.LookupEnv("SESSION_FILE")

	github.com/gotd/td/telegram/auth
		flow.go#L217: 	v, ok := os.LookupEnv(env)

	net
		conf.go#L151: 	_, localDomainDefined := os.LookupEnv("LOCALDOMAIN")