Received: (at 20250) by debbugs.gnu.org; 9 May 2016 15:39:39 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 09 11:39:39 2016 Received: from localhost ([127.0.0.1]:44518 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1aznHX-00050Z-0x for submit <at> debbugs.gnu.org; Mon, 09 May 2016 11:39:39 -0400 Received: from mail-oi0-f47.google.com ([209.85.218.47]:32769) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <meyering@HIDDEN>) id 1aznHU-00050I-Lg for 20250 <at> debbugs.gnu.org; Mon, 09 May 2016 11:39:37 -0400 Received: by mail-oi0-f47.google.com with SMTP id v145so214336315oie.0 for <20250 <at> debbugs.gnu.org>; Mon, 09 May 2016 08:39:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=4uPsKaCHW3A31MT6s9g8Caa0Un7QEyDh5DoRT0+i+uo=; b=jDBZBGpONYQi+BgZ49a+Hkn0FQm7xvRPZwc3dfZWoetBSL+V3Q4jmJtmhZYTHeR9Ux Ct7XGDzM66JN8F2IDTZy4zr2RXRh2AVrXSfRuNltNB6fjTzNJl4WgCQY8/+wyPFp77Ud hJQoItwEICm/Df4vL8qgK969L6kH2ji64jWo7FZuMzQxDiHL7YMNuO3MGzThGX7v9HIq oIlNi2BhAllIo8a+xnFTrSdrOOo+UuuoT5xvNsyhZvr6VhoSM27jZ7yFhiMLrNAWrDkY d5zJ6xYskeAYd9FJjkhTel6Y+FSwLXR0sWtozQq0TXs7MornDUpCa2dCnxMv1VtPJDcv gfGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=4uPsKaCHW3A31MT6s9g8Caa0Un7QEyDh5DoRT0+i+uo=; b=GRtS45BjGcFcmFC89WEbO7EuK8VpeWcZFYmpLZGYSZG590UOlPE2IXGZ9R1ZhD3Xtu HNnfu1IQRp9OAVH6An74PX0tEdT2F2GyQjCpCRzIXtMkqT67hxJdeOzQ8CmureGPs9d7 eSZtqFuEth2vKFKsnUBx0gNA4s10pxb/3T24leSMac1lh1cu3kXC66aPgZTNy9ZVyVM6 oiA7WeunuLnu3xUbajEo3ThERYcNSR2Ji3iE4aFwYTZH5RBCVfSxhpULVGmVucla74PR UXYteWh4te954aZRbct70gvjHvocwo36dbGdpmASwXx8boZ3Fl0ifO1YdV6akPdi5/WE 0U7Q== X-Gm-Message-State: AOPr4FWsHFeYtGKwuQZ3lZuz3x8wl5arq+XhQ8BXDc+Wgpc/NpSIEvk67b+1VAUEkpvPjFoy7DtebLZxj6n9bw== X-Received: by 10.157.1.120 with SMTP id 111mr465425otu.172.1462808370909; Mon, 09 May 2016 08:39:30 -0700 (PDT) MIME-Version: 1.0 Received: by 10.202.175.193 with HTTP; Mon, 9 May 2016 08:39:10 -0700 (PDT) In-Reply-To: <CA+8g5KFHv5MKqiCsoH=cH66mQpz1=0AC3-Z67ps7wG1zO1rWGw@HIDDEN> References: <551E93A8.6020603@HIDDEN> <CA+8g5KFHv5MKqiCsoH=cH66mQpz1=0AC3-Z67ps7wG1zO1rWGw@HIDDEN> From: Jim Meyering <jim@HIDDEN> Date: Mon, 9 May 2016 08:39:10 -0700 X-Google-Sender-Auth: GTpw5UctMbYnv9yyeH_0C3kPDjo Message-ID: <CA+8g5KGgk2KkmQ8Jzyoow3nE4m6FE6VgQgzcAL0Zi0gq=dEjLQ@HIDDEN> Subject: Re: [bug-diffutils] bug#20250: diff by size To: Andreas <wiisses@HIDDEN> Content-Type: text/plain; charset=UTF-8 X-Spam-Score: -0.4 (/) X-Debbugs-Envelope-To: 20250 Cc: 20250 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.4 (/) On Sun, May 8, 2016 at 9:36 PM, Jim Meyering <jim@HIDDEN> wrote: > tags 20250 notabug > close 20250 > done > > On Fri, Apr 3, 2015 at 6:20 AM, Andreas <wiisses@HIDDEN> wrote: >> Dear diff-team, >> >> this is not a bug but an idea for a diff option in further versions: >> >> Idea: >> comparison of two files by size only. >> >> why? >> makes comparison extremely fast; often no need to compare file contents >> to get a first hint whether there is a difference at all >> >> example: >> - uploading a folder with a bunch of files to a slow motion cloud; >> comparing each file by contents is very time consuming (...slow motion >> cloud) >> - as a first hint to find out about a possible difference could be the >> comparison of file size for each file uploaded with the local ones > > Thanks for the suggestion, but diff already performs the optimization, > when possible, of detecting when two files have different sizes, > and in that case does not even bother to open > (much less read/compare) them. To clarify: the above is what happens when you use the --brief (-q) option. It is obviously not the default.
bug-diffutils@HIDDEN:bug#20250; Package diffutils.
Full text available.Received: (at 20250) by debbugs.gnu.org; 9 May 2016 04:36:43 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 09 00:36:43 2016 Received: from localhost ([127.0.0.1]:43686 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1azcvz-0002Lj-2c for submit <at> debbugs.gnu.org; Mon, 09 May 2016 00:36:43 -0400 Received: from mail-oi0-f67.google.com ([209.85.218.67]:33732) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <meyering@HIDDEN>) id 1azcvx-0002LW-2W for 20250 <at> debbugs.gnu.org; Mon, 09 May 2016 00:36:41 -0400 Received: by mail-oi0-f67.google.com with SMTP id f63so25714992oig.0 for <20250 <at> debbugs.gnu.org>; Sun, 08 May 2016 21:36:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=mYla1f0vay0HsRIExSib9FBwIWbCmDLT10trBgSsK7g=; b=A4tAdG+DEIf9FfMz0RplE9B+qGaD2iiYjddW9UtngO1KqYYyU06rQlwwDGiHfObLpu pTrJf9T5lXdOHjc/0uu9xRlC5H28tHcuv4FYWnG2tf+d87ubPk16gFONQyjcJrvKTFfB W35kd6avAUngwFmFFEOz6lgBGQzRAoWnbJo1nuBAr43ze/fkQUi3z0V1LAFrMRHctqr9 6ikrRHLdDuTIk4mLHDepiIUlsaCaaDKg0o1HoRW5ijifJSqWBF8pcOALsQoaZOya16DG 03z5D8hUCTrJGdx11xWVIFPGT+sgrUKh3fSHPAuWttEdz70zv1A+Bu1LBsUioURIhAGX eBrg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=mYla1f0vay0HsRIExSib9FBwIWbCmDLT10trBgSsK7g=; b=b8wgkWhuSYSQIBKszz0I0qGFa97G21RQSjs+W/G8UGx8h5t9JajqqUzkMbWfkdpBAF ZNIYWAbpQQwHe22hJrsppf74wsUKEBH4qh3ZW9jmA9aSHC6NlIBVmByLyoIwxUf2eX/6 Mzq1JfcBeJC/egwbMJZkjXNfCM5smIhK7ZxymT0p7y2QLKUz/oolohT8l2ji62pyh1GM GlfMt0PUpGYd6560VCU3Gr9HBYEND86pY01H7SWQ9LnXheX1BzBVexE0QWkyInzR/hIZ LN9QE/Tiq6LisF9njPMWDX2yVOIkIgA5smAp7AXwia+wVcohxR/a6mXE/55k6li+r0Nu iiJw== X-Gm-Message-State: AOPr4FVTiS4U8kXx99HZUoczZ+H5HNsekOhuZgPjz2IHB4R1tX6BcNlHg3gPwVhB3SAFIusVQEjcgzMmnMwUcA== X-Received: by 10.157.1.120 with SMTP id 111mr13496892otu.172.1462768595388; Sun, 08 May 2016 21:36:35 -0700 (PDT) MIME-Version: 1.0 Received: by 10.202.175.193 with HTTP; Sun, 8 May 2016 21:36:15 -0700 (PDT) In-Reply-To: <551E93A8.6020603@HIDDEN> References: <551E93A8.6020603@HIDDEN> From: Jim Meyering <jim@HIDDEN> Date: Sun, 8 May 2016 21:36:15 -0700 X-Google-Sender-Auth: t5-bpn1inVf7yO721_1Ii1pQ7e4 Message-ID: <CA+8g5KFHv5MKqiCsoH=cH66mQpz1=0AC3-Z67ps7wG1zO1rWGw@HIDDEN> Subject: Re: [bug-diffutils] bug#20250: diff by size To: Andreas <wiisses@HIDDEN> Content-Type: text/plain; charset=UTF-8 X-Spam-Score: -0.5 (/) X-Debbugs-Envelope-To: 20250 Cc: 20250 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.5 (/) tags 20250 notabug close 20250 done On Fri, Apr 3, 2015 at 6:20 AM, Andreas <wiisses@HIDDEN> wrote: > Dear diff-team, > > this is not a bug but an idea for a diff option in further versions: > > Idea: > comparison of two files by size only. > > why? > makes comparison extremely fast; often no need to compare file contents > to get a first hint whether there is a difference at all > > example: > - uploading a folder with a bunch of files to a slow motion cloud; > comparing each file by contents is very time consuming (...slow motion > cloud) > - as a first hint to find out about a possible difference could be the > comparison of file size for each file uploaded with the local ones Thanks for the suggestion, but diff already performs the optimization, when possible, of detecting when two files have different sizes, and in that case does not even bother to open (much less read/compare) them. If you want to simply compare file sizes, you can already write a tiny shell/perl/python script to obtain and compare those numbers, so I'm closing this auto-created "issue". You're welcome to continue the discussion, which is being archived at http://bugs.gnu.org/20250
bug-diffutils@HIDDEN:bug#20250; Package diffutils.
Full text available.Received: (at 20250) by debbugs.gnu.org; 7 Apr 2015 15:03:48 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Apr 07 11:03:48 2015 Received: from localhost ([127.0.0.1]:47838 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1YfV2V-00043n-0t for submit <at> debbugs.gnu.org; Tue, 07 Apr 2015 11:03:48 -0400 Received: from mga09.intel.com ([134.134.136.24]:53418) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from <david.s.gordon@HIDDEN>) id 1YfV2O-00042z-Mg for 20250 <at> debbugs.gnu.org; Tue, 07 Apr 2015 11:03:41 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga102.jf.intel.com with ESMTP; 07 Apr 2015 08:03:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,538,1422950400"; d="scan'208";a="704710121" Received: from dsgordon-linux.isw.intel.com (HELO [10.102.226.149]) ([10.102.226.149]) by fmsmga002.fm.intel.com with ESMTP; 07 Apr 2015 08:03:02 -0700 Message-ID: <5523F1A5.1050607@HIDDEN> Date: Tue, 07 Apr 2015 16:03:01 +0100 From: Dave Gordon <david.s.gordon@HIDDEN> Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Andreas <wiisses@HIDDEN>, 20250 <at> debbugs.gnu.org Subject: Re: [bug-diffutils] bug#20250: diff by size References: <551E93A8.6020603@HIDDEN> In-Reply-To: <551E93A8.6020603@HIDDEN> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: 20250 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -5.0 (-----) On 03/04/15 14:20, Andreas wrote: > Dear diff-team, > > this is not a bug but an idea for a diff option in further versions: > > Idea: > comparison of two files by size only. > > why? > makes comparison extremely fast; often no need to compare file contents > to get a first hint whether there is a difference at all > > example: > - uploading a folder with a bunch of files to a slow motion cloud; > comparing each file by contents is very time consuming (...slow motion > cloud) > - as a first hint to find out about a possible difference could be the > comparison of file size for each file uploaded with the local ones > > Thanks in advance for integrating this option in future diff versions. > > Great tool, great diff team! > Andreas Schirra > wiisses@HIDDEN It probably doesn't belong in diff(1), but maybe in cmp(1)? For example, it might be a meaningful semantic for the case of "cmp -n 0", which currently always says "equal" (-n 0 means compare at most 0 bytes), or some other variation that isn't currently meaningful, such as "cmp -n -1 <FILE1> <FILE2>" ? OTOH, you can easily get and compare filesizes in a script already, for example using "stat --printf=%s <FILE>", and for the case of synchronising with a slow remote backup, rsync(1) already incorporates lots of clever ways to reduce the bandwidth of the remote traffic, including using just the filesize and datestamp to check for (mis-)matches. .Dave.
bug-diffutils@HIDDEN:bug#20250; Package diffutils.
Full text available.Received: (at submit) by debbugs.gnu.org; 3 Apr 2015 14:55:13 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Apr 03 10:55:13 2015 Received: from localhost ([127.0.0.1]:44098 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1Ye304-0003eg-AJ for submit <at> debbugs.gnu.org; Fri, 03 Apr 2015 10:55:13 -0400 Received: from eggs.gnu.org ([208.118.235.92]:48544) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wr-0001Ji-8s for submit <at> debbugs.gnu.org; Fri, 03 Apr 2015 09:20:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wi-0006IK-99 for submit <at> debbugs.gnu.org; Fri, 03 Apr 2015 09:20:51 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=BAYES_40,FREEMAIL_FROM autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:57868) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wi-0006IG-6y for submit <at> debbugs.gnu.org; Fri, 03 Apr 2015 09:20:48 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50244) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wh-0007nm-AF for bug-diffutils@HIDDEN; Fri, 03 Apr 2015 09:20:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wd-0006Fs-9c for bug-diffutils@HIDDEN; Fri, 03 Apr 2015 09:20:47 -0400 Received: from mout.web.de ([212.227.17.11]:65108) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <wiisses@HIDDEN>) id 1Ye1Wc-0006ER-W7 for bug-diffutils@HIDDEN; Fri, 03 Apr 2015 09:20:43 -0400 Received: from [192.168.2.105] ([84.173.17.139]) by smtp.web.de (mrweb101) with ESMTPSA (Nemesis) id 0LgpVS-1ZFqud0mrW-00oGfW for <bug-diffutils@HIDDEN>; Fri, 03 Apr 2015 15:20:41 +0200 Message-ID: <551E93A8.6020603@HIDDEN> Date: Fri, 03 Apr 2015 15:20:40 +0200 From: Andreas <wiisses@HIDDEN> User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: bug-diffutils@HIDDEN Subject: diff by size Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:W/NvUxO4fovJIMxEJwCFEobLg66rrqCyxPpxaiU1hkxJGtT/vxn XHIZI+KsfWJsmPSR/IOmsu/CyJcPLFpvmfWukbG1WXVG+REiNWeymlq61zOmaukBkX3EvYe 7MyDoew/uGBoQiS7tfSOmKW+CJd28V8lsJgAEUUdaWSrN0u/HV6ob2IQIeU8TLYQKoQdMPs 5+pjDYsODurKTxZpbEJRg== X-UI-Out-Filterresults: notjunk:1; X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.1 (----) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Fri, 03 Apr 2015 10:55:10 -0400 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -4.1 (----) Dear diff-team, this is not a bug but an idea for a diff option in further versions: Idea: comparison of two files by size only. why? makes comparison extremely fast; often no need to compare file contents to get a first hint whether there is a difference at all example: - uploading a folder with a bunch of files to a slow motion cloud; comparing each file by contents is very time consuming (...slow motion cloud) - as a first hint to find out about a possible difference could be the comparison of file size for each file uploaded with the local ones Thanks in advance for integrating this option in future diff versions. Great tool, great diff team! Andreas Schirra wiisses@HIDDEN
Andreas <wiisses@HIDDEN>:bug-diffutils@HIDDEN.
Full text available.bug-diffutils@HIDDEN:bug#20250; Package diffutils.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.