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Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!seismo!brl-tgr!tgr!gwyn@BRL.ARPA
From: gwyn@BRL.ARPA (VLD/VMB)
Newsgroups: net.unix-wizards
Subject: Re:  /tmp versus temporary file types
Message-ID: <2365@brl-tgr.ARPA>
Date: Wed, 23-Oct-85 17:42:27 EDT
Article-I.D.: brl-tgr.2365
Posted: Wed Oct 23 17:42:27 1985
Date-Received: Fri, 25-Oct-85 02:40:46 EDT
Sender: news@brl-tgr.ARPA
Lines: 2

A null path component already has a meaning (same as ".").
On System V, the whole pathname cannot be null, however.