From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 5409 invoked from network); 19 Sep 2023 06:11:04 -0000 Received: from minnie.tuhs.org (2600:3c01:e000:146::1) by inbox.vuxu.org with ESMTPUTF8; 19 Sep 2023 06:11:04 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 0C4A9402A3; Tue, 19 Sep 2023 16:10:58 +1000 (AEST) Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by minnie.tuhs.org (Postfix) with ESMTPS id 1A26F40295 for ; Tue, 19 Sep 2023 16:10:51 +1000 (AEST) Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1c4707b1031so19267205ad.2 for ; Mon, 18 Sep 2023 23:10:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=systech.com.au; s=google; t=1695103850; x=1695708650; darn=tuhs.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=txrg0VlqgWwxxoU549fb8nS9s/SE5tCHVZttWZmuQrM=; b=H/eG9futn63sltGl2Mn7Y+sivGY3lc0lLRsphpqpKXvej4cfhPddCyh+DoqgyQfCKn xz8fiEh8LCHsb0y8bIH3jPKLjszEBkF7xK5bC+270qgcXMSgKgldoyqHz6DTZjU27J0X PuFnPOFNokSG2yEj5kP3j/KG1oZxAqqny4x7o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695103850; x=1695708650; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=txrg0VlqgWwxxoU549fb8nS9s/SE5tCHVZttWZmuQrM=; b=TVveSTtCM5kbk/35tvFNau+bmuxmLueEBanEYsz3t+UeNWRXde4N1o+ReW5OaETwun kGrEpAnaJsguHqRJmlx5kIcDb872O7kSJs44UOaVUGqsEsRGCUGydLtDWam5d9GyMM0K GQf+6gcrB/oXPbOcLYEnI01j5so4pNlYCCOdJCpYy0aK8n6HwczF9qnwtHbMkcgJ5+TF u/XmIkPhR/GuYoGZXFyLYlL5EYUtHdtI/Ob+ONtWbjEXklCx5+nuyINpamBFEImI3AzL Zbaraks7is48IJExIRr22/6prc6QAD2wN5UZ4Pid467e/FY5ODFD/mwG1Wts6T1W05b3 CbPA== X-Gm-Message-State: AOJu0YwgdkH9NbE71Ps7RV9HBvgFpqPvqXWTwjNfojuR2hovgcwPSD2P 8jSRKvMCPCo8NrbruKrRIeHs27cLOv3e151bjTeztA== X-Google-Smtp-Source: AGHT+IGje8MBEXwWccZH3WaQ50A5g7HURJPQ3AFOM/YtwdcHjU1d21+Ui8Ds9LM6Os0sZfyZRI9vO7EjU0A+jvseh6Y= X-Received: by 2002:a17:902:ab5d:b0:1c3:758d:32de with SMTP id ij29-20020a170902ab5d00b001c3758d32demr11609429plb.12.1695103850014; Mon, 18 Sep 2023 23:10:50 -0700 (PDT) MIME-Version: 1.0 References: <81B4F221-C3EF-4543-84CD-78E52ABF0E67@planet.nl> In-Reply-To: From: Serge Burjak Date: Tue, 19 Sep 2023 16:10:38 +1000 Message-ID: To: Jonathan Gray Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Message-ID-Hash: HATY6QXZZKSZW4TAQXIY5YCWL353QOWL X-Message-ID-Hash: HATY6QXZZKSZW4TAQXIY5YCWL353QOWL X-MailFrom: sburjak@systech.com.au X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Paul Ruizendaal , tuhs@tuhs.org X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: x/y/zmodem on Unix List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: If anyone wants more zmodem/Chuck Forsberg history, a prolific usenet poster, here are news archives going back to 1994. It gives a good indication of his personality. I had been dealing with him for about 6 years by then... Still have the licence keys. https://groups.google.com/g/comp.protocols.misc/c/kjQ3HWqR2Ck/m/QVrdXdbsz1E= J Kermit discussion and comparisons, https://groups.google.com/g/comp.dcom.modems/c/GuEzWARpVQY/m/nZX5QdmY7xwJ On Tue, 19 Sept 2023 at 13:42, Serge Burjak wrote: > > Chuck Forsberg wrote Zmodem as a sliding Window transfer protocol > alternative to Kermit and superkermit. It was very high performance > over slow links. He provided source code support for the protocol > driver on the server and client end, in various versions. His client > programs were Yam (yet another modem) and ProYam. You could shell out > of the client, run other programs. Other client platforms supported > parts of the protocol. Available as binaries and source when licenced. > It had a scripting language and out of the box had the zmodem protocol > which has the ability to send commands, resume transfers, traverse non > 8 bit or unreliable links, remove or rename source file, deal with > conflicting file names, synchronise folders and lots of other things. > I have written many scripts to help dial up users into a unix box and > download financial research data. Scripts still work across the > internet. He made the code very portable, clean and I believe it is > open source now. Chuck is no longer with us. > > SecureCRT ssh client from VanDyke.com still has native support. To > send a file from the unix host, typically sz filename and it just > arrives. Sz- u and it will remove the source file after successful > transfer, plus lots of other options. The binary was typically linked > so if you type sx it would try to do a transfer with xmodem, even > though it's the same binary. > > Hope this helps. > > Serge > > > On Tue, 19 Sept 2023 at 12:47, Jonathan Gray wrote: > > > > On Tue, Sep 19, 2023 at 12:31:30AM +0200, Paul Ruizendaal wrote: > > > I had always associated x/y/zmodem with CP/M and MSDOS, not so much w= ith Unix. Last December Clem already pointed out that it was popular for fi= le exchange in the Unix scene as well, along with several other similar too= ls. Also, the ymodem approach to file metadata is very unix oriented, sugge= sting it originated on Unix or at least that Unix users were an important u= ser demographic. Yet, I could find little trace of x/y/zmodem in the TUHS U= nix Tree. The search tool finds it in 2.11BSD, in Minix 1.5 and 2.0 and in = V10. Kermit is in those as well, and in 4.3BSD and 4.4BSD on top. > > > > have a look at > > tuhs/Applications/Shoppa_Tapes/usenix878889.tar.gz > > usenix87/Comm/ > > usenix89/Comm/ > > > > also appears in > > 386bsd/othersrc/public/zmodem-3.03/ > > where the license was changed to prohibit commercial use after > > the RLE changes in April 1989 > > > > https://www.ohse.de/uwe/software/lrzsz.html > > is derived from an earlier version with the license changed to GPLv2