From owner-svn-src-all@freebsd.org Sat Jun 20 11:20:16 2020 Return-Path: Delivered-To: svn-src-all@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 D87CF34EA50; Sat, 20 Jun 2020 11:20:16 +0000 (UTC) (envelope-from fernape@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49ptWN5FxFz3cTX; Sat, 20 Jun 2020 11:20:16 +0000 (UTC) (envelope-from fernape@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id AFB7CB941; Sat, 20 Jun 2020 11:20:16 +0000 (UTC) (envelope-from fernape@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 05KBKGTE091367; Sat, 20 Jun 2020 11:20:16 GMT (envelope-from fernape@FreeBSD.org) Received: (from fernape@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 05KBKGwC091366; Sat, 20 Jun 2020 11:20:16 GMT (envelope-from fernape@FreeBSD.org) Message-Id: <202006201120.05KBKGwC091366@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: fernape set sender to fernape@FreeBSD.org using -f From: =?UTF-8?Q?Fernando_Apestegu=c3=ada?= Date: Sat, 20 Jun 2020 11:20:16 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362434 - head/usr.bin/cmp X-SVN-Group: head X-SVN-Commit-Author: fernape X-SVN-Commit-Paths: head/usr.bin/cmp X-SVN-Commit-Revision: 362434 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Jun 2020 11:20:16 -0000 Author: fernape (ports committer) Date: Sat Jun 20 11:20:16 2020 New Revision: 362434 URL: https://svnweb.freebsd.org/changeset/base/362434 Log: cmp(1): Add EXAMPLES section Add a small number of examples depicting the use of -l, -z and byte offsets Approved by: 0mp@ Modified: head/usr.bin/cmp/cmp.1 Modified: head/usr.bin/cmp/cmp.1 ============================================================================== --- head/usr.bin/cmp/cmp.1 Sat Jun 20 08:22:57 2020 (r362433) +++ head/usr.bin/cmp/cmp.1 Sat Jun 20 11:20:16 2020 (r362434) @@ -31,7 +31,7 @@ .\" @(#)cmp.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd June 16, 2020 +.Dd June 20, 2020 .Dt CMP 1 .Os .Sh NAME @@ -107,26 +107,33 @@ file (before any differences were found). An error occurred. .El .Sh EXAMPLES -Assuming a file named example.txt with the following contents: +Assuming a file named +.Pa example.txt +with the following contents: .Bd -literal -offset indent a b c .Ed .Pp -Compare stdin with example.txt: +Compare stdin with +.Pa example.txt : .Bd -literal -offset indent $ echo -e "a\\nb\\nc" | cmp - example.txt .Ed .Pp -Same as above but introducing a change in byte three in stdin. +Same as above but introducing a change in the third byte of stdin. Show the byte number (decimal) and differing byte (octal): .Bd -literal -offset indent $ echo -e "a\\nR\\nc" | cmp -l - example.txt 3 122 142 .Ed .Pp -Compare example.txt and /boot/loader.conf exiting if size differs. +Compare file sizes of +.Pa example.txt +and +.Pa /boot/loader.conf +and return 1 if they are not equal. Note that .Fl z can only be used with regular files: @@ -135,8 +142,10 @@ $ cmp -z example.txt /boot/loader.conf example.txt /boot/loader.conf differ: size .Ed .Pp -Compare stdin with file example.txt omitting the 4 first bytes from stdin and -the 2 first bytes from example.txt: +Compare stdin with +.Pa example.txt +omitting the first 4 bytes from stdin and the first 2 bytes from +.Pa example.txt : .Bd -literal -offset indent $ echo -e "a\\nR\\nb\\nc" | cmp - example.txt 4 2 .Ed