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=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 ca0b46d6 for ; Mon, 20 Jan 2020 23:44:20 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 3508E9C142; Tue, 21 Jan 2020 09:44:19 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 8FFB79C0FD; Tue, 21 Jan 2020 09:43:49 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 8BB6D9C0FD; Tue, 21 Jan 2020 09:43:46 +1000 (AEST) Received: from central.weird.com (unknown [198.96.117.51]) by minnie.tuhs.org (Postfix) with ESMTP id B4EF29BFE6 for ; Tue, 21 Jan 2020 09:43:45 +1000 (AEST) Received: from (invalid client hostname: bind: DNS error: DNS lookup for A for 'more.local': Unknown host)more.local ((no PTR matching greeting name)S01060026bb6c284e.ok.shawcable.net[24.71.254.93] port=46718) by central.weird.com([198.96.117.51] port=587) via TCP with esmtp (3605 bytes) (sender: ) (ident using UNIX) id for ; Mon, 20 Jan 2020 18:43:44 -0500 (EST) (Smail-3.2.0.122-Pre 2005-Nov-17 #77 built 2019-Dec-29) Received: from (invalid client hostname: the DNS A record (with the targegt address [10.0.1.129]) for the hostname 'more.local' does not match the expected address [10.0.1.129])more.local ((no PTR matching greeting name)future.local[10.0.1.133] port=59659) by more.local([10.0.1.129] port=25) via TCP with esmtp (3095 bytes) (sender: ) id for ; Mon, 20 Jan 2020 15:43:44 -0800 (PST) (Smail-3.2.0.122-Pre 2005-Nov-17 #1 built 2015-Feb-17) Message-Id: Date: Mon, 20 Jan 2020 15:43:44 -0800 From: "Greg A. Woods" To: The Unix Heritage Society mailing list In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.8 EasyPG/1.0.0 Emacs/25.3 (x86_64--netbsd) MULE/6.0 (HANACHIRUSATO) X-Face: ; j3Eth2XV8h1Yfu*uL{<:dQ$#E[DB0gemGZJ"J#4fH*][ lz; @-iwMv_u\6uIEKR0KY"=MzoQH#CrqBN`nG_5B@rrM8,f~Gr&h5a\= List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: The Unix Heritage Society mailing list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --pgp-sign-Multipart_Mon_Jan_20_15:43:38_2020-1 Content-Type: text/plain; charset=US-ASCII At Sun, 19 Jan 2020 14:22:29 -0700, Grant Taylor via TUHS wrote: Subject: [TUHS] Shell Level... > > Have you ever used shell level, $SHLVL, in your weekly ~> daily use of Unix? I invented my own variant, $LEV, for Ksh, starting before 1993, probably when I first started using DMD-5620 terminals and layers, though possibly slightly before that when I first started using Ksh (about 1989 when I bought a used ATT3B2/400 for home use). I used my own $LEV in my prompt (or the window title, if using a windowing system) just to remind me if I'd started a sub-shell for some reason, such as in order to preserve my current working directory and environment. Early Ksh didn't have $SHLVL, and it's not universal (i.e. POSIX), so I've never really used $SHLVL itself (though I have very recently added a hook to set my $LEV from it IFF it is available). See https://github.com/robohack/dotfiles :-) -- Greg A. Woods Kelowna, BC +1 250 762-7675 RoboHack Planix, Inc. Avoncote Farms --pgp-sign-Multipart_Mon_Jan_20_15:43:38_2020-1 Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit Content-Description: OpenPGP Digital Signature -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQTWEnAIIlcZX4oAawJie18UwlnHhQUCXiY7LQAKCRBie18UwlnH heVzAJ46FKUgkuGllIHdF48Dy/bweRGw6gCeNqVEd4+AzCcZhv5UEi1cumIycK8= =TNht -----END PGP SIGNATURE----- --pgp-sign-Multipart_Mon_Jan_20_15:43:38_2020-1--