From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 08a76aed for ; Sun, 28 Apr 2019 15:06:41 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id D76779B54B; Mon, 29 Apr 2019 01:06:39 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id A6B8193D2A; Mon, 29 Apr 2019 01:06:11 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=irreal.org header.i=@irreal.org header.b="A5sfpcvi"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 85A5793D2A; Mon, 29 Apr 2019 01:06:08 +1000 (AEST) X-Greylist: delayed 1315 seconds by postgrey-1.36 at minnie.tuhs.org; Mon, 29 Apr 2019 01:06:07 AEST Received: from gateway3.unifiedlayer.com (gateway3.unifiedlayer.com [67.222.44.236]) by minnie.tuhs.org (Postfix) with ESMTPS id 1C51F93D27 for ; Mon, 29 Apr 2019 01:06:07 +1000 (AEST) Received: from cm6.websitewelcome.com (cm6.websitewelcome.com [108.167.139.19]) by gateway3.unifiedlayer.com (Postfix) with ESMTP id 10B6E200A210D for ; Sun, 28 Apr 2019 09:44:12 -0500 (CDT) Received: from shared120.accountservergroup.com ([162.215.249.103]) by cmsmtp with ESMTP id Kl2JhaJNFhyBYKl2JhK3Yy; Sun, 28 Apr 2019 09:44:12 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=irreal.org; s=default; h=Content-Type:MIME-Version:Message-ID:Date:In-reply-to:Subject: To:From:References:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=A4ynLUIUyhy8duy2B4egUprMsc4PXCmzac4vJfqn/ks=; b=A5sfpcviTtLZPj52aERzEKP2C/ mqK7VixdA/8vX1hn+fXJxpgChsCSjZwkU4tPRZFBIhaJfBSuro/LyNVZDEV0nqVgRvKz8YAI8uk/A XunGxzwGm7x3vPhGjt42NsjI83sPPrYwr1moSl5raK4/jUzqRw2okNKUZRxRXHsur7oFfnJ9DKVTy BVcDzEZZ2a0WN18iNUS3g9SpaiOqnfZTccE6qDXAC7Jq48G8iAsw91yXqaEJUbCwz75w70Tvm9862 OZ7uxd07clFoEA0t0Yx8KWB5KX3EaJvSULI1BIAlDuBB7kSIwt4k9XxIRLl0+OE9vFNArveBMilbm Gw2L4InQ==; Received: from [35.141.170.223] (port=49870 helo=manfredII.local) by shared120.accountservergroup.com with esmtpa (Exim 4.91) (envelope-from ) id 1hKl2J-000lCA-7s for tuhs@minnie.tuhs.org; Sun, 28 Apr 2019 09:44:11 -0500 References: <20190427141655.GA8310@alice> User-agent: mu4e 1.2.0; emacs 26.2 From: jcs To: tuhs@minnie.tuhs.org In-reply-to: Date: Sun, 28 Apr 2019 10:44:00 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; format=flowed X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - shared120.accountservergroup.com X-AntiAbuse: Original Domain - minnie.tuhs.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - irreal.org X-BWhitelist: no X-Source-IP: 35.141.170.223 X-Source-L: No X-Exim-ID: 1hKl2J-000lCA-7s X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (manfredII.local) [35.141.170.223]:49870 X-Source-Auth: jcs@irreal.org X-Email-Count: 1 X-Source-Cap: YzY3ODU3O2M2Nzg1NztzaGFyZWQxMjAuYWNjb3VudHNlcnZlcmdyb3VwLmNvbQ== X-Local-Domain: yes Subject: Re: [TUHS] A question about ls(1) X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Dan Cross writes: > On Sat, Apr 27, 2019 at 10:26 AM Anthony Martin > wrote: > >> From at least V2 to V6, the ls(1) command would not >> show directory entries whose names began with a '.' >> unless the -a flag was supplied. [snip] >> Was the initial behavior intentional or just a >> matter of expediency? >> > > I believe it's been publicly stated that it was a mistake in > early Unix. > Apparently, Rob Pike had a Google+ post to this effect back in > 2012 (or > earlier): I see a reference to it from another mailing list > around that > time. Unfortunately, the Google+ content is now lost. Rob, do > you have a > copy? Here's a tweet that shows the post: https://twitter.com/rauchg/status/698689290667053060/photo/1?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E698689290667053060