From owner-freebsd-questions@freebsd.org Fri Jun 5 06:28:15 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D997C341BCC for ; Fri, 5 Jun 2020 06:28:15 +0000 (UTC) (envelope-from michaelsprivate@gmail.com) Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49dXlM1D3cz4Bh2 for ; Fri, 5 Jun 2020 06:28:15 +0000 (UTC) (envelope-from michaelsprivate@gmail.com) Received: by mail-io1-xd2e.google.com with SMTP id d5so9060887ios.9 for ; Thu, 04 Jun 2020 23:28:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=uhiBw0N383kNJh6tJinj9Pz3qk3xr6Lk/Px76gy9EUo=; b=HCCNBteB1LAg4qCvPJg0DK9Lry44MyC+6TXl/vell4QK6bVjd0fYFshbA5ls+t0juh NG/2nvo+IPagCp7z4MjkypPi5NVZeQnORiehjZYSGbFw4bW+Ve4Ce6oTSeGnZF9lW/GT tp+NPhdP/I11B2fEg4UNEECxaVBILOoL4FZcgUo9k491Iq4SmhyRu+Wb6mdGk3dR6JXp gieM0QIW2HCl3Dw2OPr6AiMhHY3AxTgktR0WAmu6C+4ZjYkYWm9iGZIu2q8q/Hk4+bHL Wt0o9f7Eojo2LRSjxJ/OeNGJwTJ5ZLqJ4t4oQnY9dJq80GjbZTWIDPaytDprM6UemggV rhmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=uhiBw0N383kNJh6tJinj9Pz3qk3xr6Lk/Px76gy9EUo=; b=uSE7HVOwzh2P9HFdOzuB+s3G1nNyH3/zj/ohVJnGTudO/+IGQl6CbNCSX3CVhHpSdZ GfKK+rWyqPNFsLFXOo3FxsvLMV7GfeJE5ofbHulk8sx6kR0Jm4BKYigLzB2E2e+BqCsg iJVdztUKqVO2lp4binPjQNSv5JLlje3tSKWl95/inlEpMRMf1uDtGu2cEcrMin0eDaiJ tjjUVQiE6o3jCrnO18TB+JTbz81PjeSzvLaPzSi1Tcz2wCWeVQ6mnLh7hFqnAcNfQH5z S5H5ZlV/B7I1mjLUkrv0vsUnjqAifoq5MuQc8Xkj9OjZE0C6wHd8SgRk4P+ROnp4/C1j nPbA== X-Gm-Message-State: AOAM5318wZjXCkIaNnfpgl4MR4TJnECATe2aVdekozfovM7tdKWLDCPc QaQPc1PnNPpx58fo/zENdwFNp3XfvKn6NDa5Kr0zaPYTggc= X-Google-Smtp-Source: ABdhPJxCSJroxbIBx7YjfmU9kN0wQtX9IGqf49zsDrOpTtikNfGdYNPZyAS4rChPX5HS4m3gUsez2VUsxsEe9ygq/QI= X-Received: by 2002:a6b:5915:: with SMTP id n21mr7192573iob.103.1591338493973; Thu, 04 Jun 2020 23:28:13 -0700 (PDT) MIME-Version: 1.0 References: <20200605062217.cjtkdgwqwqqienct@blueeyes.stuffed.animals> In-Reply-To: <20200605062217.cjtkdgwqwqqienct@blueeyes.stuffed.animals> From: Michael Schuster Date: Fri, 5 Jun 2020 08:28:02 +0200 Message-ID: Subject: Re: Mininal skills To: "Brenda J. Butler" Cc: freebsd-questions X-Rspamd-Queue-Id: 49dXlM1D3cz4Bh2 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=HCCNBteB; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of michaelsprivate@gmail.com designates 2607:f8b0:4864:20::d2e as permitted sender) smtp.mailfrom=michaelsprivate@gmail.com X-Spamd-Result: default: False [-3.90 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.04)[-1.036]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_HAM_LONG(-1.00)[-1.005]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::d2e:from]; NEURAL_HAM_SHORT(-0.86)[-0.864]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Jun 2020 06:28:15 -0000 On Fri, Jun 5, 2020 at 8:22 AM Brenda J. Butler wrote: > > As for "what is shell programming" ... it's the same as regular programming > but written in a language that doesn't need to be compiled. Often the > shell program calls on other programs to do the work. So learning "shell > programming" is about more than learning the shell language - it is > also about learning enough of those other little utilities to be > able to do something useful in the shell. > One of the best books on the subject (in my experience) is "The Unix Programming Environment" by Kernighan and Pike - written in 1984, it is still a good text to teach you some of the fundamentals of the ... unix programming environment ;-). I highly recommend it. regards Michael -- Michael Schuster http://recursiveramblings.wordpress.com/ recursion, n: see 'recursion'