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=-0.7 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,PLING_QUERY, 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 e7102be5 for ; Mon, 14 Oct 2019 00:36:51 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 84F529BD6B; Mon, 14 Oct 2019 10:36:50 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 4551B9BBD7; Mon, 14 Oct 2019 10:36:21 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="fYvYI5Z9"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 7BCB79BBD7; Mon, 14 Oct 2019 10:36:19 +1000 (AEST) Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) by minnie.tuhs.org (Postfix) with ESMTPS id 373849BB2A for ; Mon, 14 Oct 2019 10:36:19 +1000 (AEST) Received: by mail-pf1-f181.google.com with SMTP id q10so9389684pfl.0 for ; Sun, 13 Oct 2019 17:36:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=h3HvjlCYZ6+t3Ij9tXY8XuGrE9jZltV0nC+id9p770g=; b=fYvYI5Z9/69NeR0ZO+t2Yrj546A3PoJKYSDt03IpJyJWZ7kja/T78+o1K2l65/C/56 4oZb0l4dW2qJbUJQHhEE777SMgSUsBhkobqZHUkyczqCzTh91Cl1sZBkUQpkFvGg8N8p S6ZGfmzEW7O+UiAAmXbMAK3WojtfRnOfcpidyLIlPBqI8ZbVeO/DG+WHbKjJB1agr8wv N93EGnT6/SEKreby3yh4D0JTUkTU/meTYv02rIrVT8gvRsxAAjrddmqqxBLgfaQKJqOZ Y00lVw7E05K7wzFcgc7lZBQSdQPg3ryvGK+Y4Ld09quLZGb9Uz/hyPRZLQ35sydraESM kULw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=h3HvjlCYZ6+t3Ij9tXY8XuGrE9jZltV0nC+id9p770g=; b=MdDnuyfO6pFtueOV795rA3pNtHU+6h1OXT74oYY6shkhl2RwBaX0F6hxy1YwoC0W2S XJQJKn/H6ydXHuPNdhGonl0uj3C93IE7CHcVoJwGTlOzQTzIAgemTVGsdRwG92kXHP8q F/FZzgXDfIkSJ1ifKWkSh+9v0R2lX6HE4CguSy56eQL+Ee630qadn/MiS9ta4gtja2Bs GcmW9rRtjmOlB6DBJTo6G9z52ZFXw/qpD5clmoABX2iYZwyTjCIN6PAhQY1LEJNh3qXi I5oW0v8hMIH9fjeaK/p3NirOLEZnlrtYDL71mltp5FRUwoW5/cHMQrieAfnk9L8D6WDm BPYg== X-Gm-Message-State: APjAAAWJMgRIKxqoM4wJIUtXA28dGHTSlJBxMTRNNe0WoA5ePObsNTpK NMTOnhP/nsEQQl7rtz9iI3si06vetPM= X-Google-Smtp-Source: APXvYqzDLsxpqRYpWmO+DNk3bTTbpXdy1hYa4muaj7HOuoflp3SH/cnk88DtPHg34AHQOPuyJ4pdMw== X-Received: by 2002:aa7:9d90:: with SMTP id f16mr30293357pfq.51.1571013378480; Sun, 13 Oct 2019 17:36:18 -0700 (PDT) Received: from [192.168.42.10] (157-131-110-126.fiber.dynamic.sonic.net. [157.131.110.126]) by smtp.gmail.com with ESMTPSA id p11sm17492895pgb.1.2019.10.13.17.36.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 13 Oct 2019 17:36:17 -0700 (PDT) To: Steve Johnson , tuhs@minnie.tuhs.org References: From: Jon Forrest Message-ID: Date: Sun, 13 Oct 2019 17:36:18 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [TUHS] What was your "Aha, Unix!" moment? 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" On 10/13/2019 2:45 PM, Steve Johnson wrote: > > I did have the opportunity in the early years to demonstrate Unix to > several dozen people, mostly users of the (IBM) mainframe computers and > the GE/Honeywell Time Sharing System.  The sequence that initiated > gasps, confusion, and ultimately joy was: > %  echo hello joe > hijoe > % cat hijoe > hello joe A technically equivalent but more dramatic version of this that I used to use back then was a shell script that would prompt for the name of a file to display, and then display the file whose name the user entered. This would make steam come out of the ears of the IBM mainframe people because it wasn't possible to do that on the IBM mainframe in use at the time. Jon