From unknown Fri Jun 20 07:14:16 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#27942 <27942@debbugs.gnu.org> To: bug#27942 <27942@debbugs.gnu.org> Subject: Status: Bug regarding "touch" command Reply-To: bug#27942 <27942@debbugs.gnu.org> Date: Fri, 20 Jun 2025 14:14:16 +0000 retitle 27942 Bug regarding "touch" command reassign 27942 coreutils submitter 27942 pavan kumar yalavarthi severity 27942 normal thanks From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 02:25:11 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 06:25:11 +0000 Received: from localhost ([127.0.0.1]:40717 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddW2o-0005kZ-Ox for submit@debbugs.gnu.org; Fri, 04 Aug 2017 02:25:10 -0400 Received: from eggs.gnu.org ([208.118.235.92]:56315) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddVHw-0004eD-1y for submit@debbugs.gnu.org; Fri, 04 Aug 2017 01:36:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddVHq-00043c-DZ for submit@debbugs.gnu.org; Fri, 04 Aug 2017 01:36:39 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:51181) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddVHq-00043O-Au for submit@debbugs.gnu.org; Fri, 04 Aug 2017 01:36:38 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47243) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddVHp-0006r4-88 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 01:36:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddVHo-00040a-Gn for bug-coreutils@gnu.org; Fri, 04 Aug 2017 01:36:37 -0400 Received: from mail-oi0-x22f.google.com ([2607:f8b0:4003:c06::22f]:33003) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ddVHo-0003wC-Bn for bug-coreutils@gnu.org; Fri, 04 Aug 2017 01:36:36 -0400 Received: by mail-oi0-x22f.google.com with SMTP id d71so6533722oih.0 for ; Thu, 03 Aug 2017 22:36:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=1YM2iTBWuPTNtmlLYAkf5DABRv7LsyclwkDTfOgLMx8=; b=azD9XHDDgsLZy4RH/eXIhDPqIstQBeuer+I4h8lJePg9rzDaf54zsB4oTZRKqELF/f 4tnIraqpIL3GfXkrfSzlrIu59uqvJDvM87k13t550fgcsEJ6TmR51XU59adwgCTU7BJq 0UoG/ebdfeWO/oEOWxpunwm9D0SncC+SfJLGkb7uy7HlBYIYMLoBrdc5F2WkGZSvwtY4 62n+rrfT36SWeVqRzw9N7YrIbXV22YCl900uRtyHyAgSEaH2/5KT/JsCNZZC2TgdEBOz taeNsfNq946KAWZxOBb2iKQqHwn11fdscZIYfBYfewWge4SnjhorcpjNuadv/9qqsSca Jmjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=1YM2iTBWuPTNtmlLYAkf5DABRv7LsyclwkDTfOgLMx8=; b=jDTuMMUfAk6U+nTuzGrJujKc270c0zSKLqblfUatnYnn+lJW6YiMKqsUrNtUf4ZF8+ kPuHjdBeDk9kaiAfqaZIifVqR0GQbztZra984j6CABii77QyNfRIif2eVUX3XbV0skIl cnlgCT7xE9sYbzFJOjessxi7Ue+3cW2FTNqyLz1H3PAtv/rCHHxZJuP2+gSyHo3JBQmG k0EYgNDvmvS7enTqMZkWtxv+dw6gkvo5e6ucJF99FOtmuY7oc9BEsKu6NbAINR6ChkEP kAxYp4XAOG4C25TpmU0KsYj3JDIJebnZax4PN49vey9ssjt+HEMQySB0qh0Pa4/VaPPf XJ6Q== X-Gm-Message-State: AHYfb5jSzXGywoane0EyNi7zG/g0yh2RKeM5x/8M3G6Z4XhwaTqMof2+ 7HiZsAecw537w4hQi1ZLLqufsnbzHQ== X-Received: by 10.202.1.201 with SMTP id 192mr1348808oib.163.1501824994068; Thu, 03 Aug 2017 22:36:34 -0700 (PDT) MIME-Version: 1.0 Received: by 10.182.24.68 with HTTP; Thu, 3 Aug 2017 22:35:53 -0700 (PDT) From: pavan kumar yalavarthi Date: Fri, 4 Aug 2017 11:05:53 +0530 Message-ID: Subject: Bug regarding "touch" command To: bug-coreutils@gnu.org Content-Type: multipart/alternative; boundary="001a1138e9b4494dff0555e6e107" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -3.8 (---) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Fri, 04 Aug 2017 02:25:09 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.8 (---) --001a1138e9b4494dff0555e6e107 Content-Type: text/plain; charset="UTF-8" " *touch -* " is not working i.e., file named " - " is not being created using *touch *command in* ubuntu* flavours , but working fine with* linux * flavours. --001a1138e9b4494dff0555e6e107 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
" touch =C2=A0- " is not working i= .e., file named " - " is not being created using touch = command in ubuntu flavours =C2=A0, but working fine with linu= x flavours.
--001a1138e9b4494dff0555e6e107-- From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 03:16:33 2017 Received: (at 27942-done) by debbugs.gnu.org; 4 Aug 2017 07:16:33 +0000 Received: from localhost ([127.0.0.1]:40737 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddWqX-0006wX-1F for submit@debbugs.gnu.org; Fri, 04 Aug 2017 03:16:33 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:35688) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddWqU-0006wJ-Vg for 27942-done@debbugs.gnu.org; Fri, 04 Aug 2017 03:16:31 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 071851606FD; Fri, 4 Aug 2017 00:16:25 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id Lv8Ys7sQWAFa; Fri, 4 Aug 2017 00:16:24 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 51DD8160728; Fri, 4 Aug 2017 00:16:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id i7J5tnHG0QYN; Fri, 4 Aug 2017 00:16:24 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.153.184.153]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 32B9B1606FD; Fri, 4 Aug 2017 00:16:24 -0700 (PDT) Subject: Re: bug#27942: Bug regarding "touch" command To: pavan kumar yalavarthi , 27942-done@debbugs.gnu.org References: From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: Date: Fri, 4 Aug 2017 00:16:23 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 27942-done X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.7 (/) pavan kumar yalavarthi wrote: > " *touch -* " is not working i.e., file named " - " is not being created > using *touch *command in* ubuntu* flavours , but working fine with* linux * > flavours. It's not a bug. In coreutils, 'touch -' is documented to touch the standard output file, not a file named '-'. The POSIX specification for 'touch' allows either the coreutils behavior or the other behavior that you mentioned. If you want to touch a file named '-', the command 'touch ./-' is a portable way to do it. From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 04:53:09 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 08:53:09 +0000 Received: from localhost ([127.0.0.1]:40828 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYM1-0000jf-4i for submit@debbugs.gnu.org; Fri, 04 Aug 2017 04:53:09 -0400 Received: from eggs.gnu.org ([208.118.235.92]:33085) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYLz-0000jB-7b for submit@debbugs.gnu.org; Fri, 04 Aug 2017 04:53:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYLt-0004fV-0h for submit@debbugs.gnu.org; Fri, 04 Aug 2017 04:53:01 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:40827) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYLs-0004fC-TF for submit@debbugs.gnu.org; Fri, 04 Aug 2017 04:53:00 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52286) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddYLr-00054W-QU for bug-coreutils@gnu.org; Fri, 04 Aug 2017 04:53:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYLo-0004YF-8P for bug-coreutils@gnu.org; Fri, 04 Aug 2017 04:52:59 -0400 Received: from ishtar.tlinx.org ([173.164.175.65]:40480 helo=Ishtar.sc.tlinx.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYLn-0004WN-Sc for bug-coreutils@gnu.org; Fri, 04 Aug 2017 04:52:56 -0400 Received: from [192.168.3.12] (Athenae [192.168.3.12]) by Ishtar.sc.tlinx.org (8.14.7/8.14.4/SuSE Linux 0.8) with ESMTP id v748qexs082837; Fri, 4 Aug 2017 01:52:43 -0700 Message-ID: <598435D8.5030607@tlinx.org> Date: Fri, 04 Aug 2017 01:52:40 -0700 From: L A Walsh User-Agent: Thunderbird MIME-Version: 1.0 To: bug-coreutils@gnu.org Subject: Re: bug#27942: Bug regarding "touch" command References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit Cc: eggert@cs.ucla.edu, yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) Paul Eggert wrote: > pavan kumar yalavarthi wrote: >> " *touch -* " is not working i.e., file named " - " is not being >> created > > It's not a bug. In coreutils, 'touch -' is documented to touch the > standard output file, not a file named '-'. The POSIX specification > for 'touch' allows either the coreutils behavior or the other Thought it was a bit humorous, the bit about touching ... "stdout"? or... as in "/dev/stdout"? Definitely not in my man page for touch, new change? I do see it in "touch --help", so seems relatively new. What is touched ? /dev/stdout? "Touching the 'file' associated with stdout"? How would I (or someone) use it? Was/is there a use case that supported or needed the new feature? Curious: partially because I was/am amused and see no clue as to how to use such a feature. From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 05:02:07 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 09:02:07 +0000 Received: from localhost ([127.0.0.1]:40849 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYUh-0000yU-Ah for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:02:07 -0400 Received: from eggs.gnu.org ([208.118.235.92]:35290) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYUe-0000y0-65 for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:02:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYUW-0004MS-9p for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:01:59 -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 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:47207) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYUW-0004M6-6a for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:01:56 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54477) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddYUQ-0000ik-56 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:01:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYUN-000466-As for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:01:50 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:38668) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYUN-00044Q-46 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:01:47 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 3F96F1606FD; Fri, 4 Aug 2017 02:01:44 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 3W31fc7hnxoc; Fri, 4 Aug 2017 02:01:43 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 16D00160727; Fri, 4 Aug 2017 02:01:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id zR9icjfREbM5; Fri, 4 Aug 2017 02:01:43 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.153.184.153]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id EB7981606FD; Fri, 4 Aug 2017 02:01:42 -0700 (PDT) Subject: Re: bug#27942: Bug regarding "touch" command To: L A Walsh , bug-coreutils@gnu.org References: <598435D8.5030607@tlinx.org> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: Date: Fri, 4 Aug 2017 02:01:42 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <598435D8.5030607@tlinx.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Debbugs-Envelope-To: submit Cc: yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) L A Walsh wrote: > "Touching the 'file' associated with stdout"? Yes, that's it. > How would I (or someone) use it? You run "touch -". Whatever file stdout happens to be associated with, gets touched. It's the same idea as "cat -", except with stdout rather than stdin. From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 05:05:02 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 09:05:02 +0000 Received: from localhost ([127.0.0.1]:40853 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYXV-00012M-RB for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:05:02 -0400 Received: from eggs.gnu.org ([208.118.235.92]:35809) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYXT-000126-Sc for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:05:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYXO-0006gW-4p for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:04:54 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:37570) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYXO-0006gB-2M for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:04:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55007) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddYXN-0001MP-85 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:04:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYXK-0006bY-8g for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:04:53 -0400 Received: from ishtar.tlinx.org ([173.164.175.65]:40978 helo=Ishtar.sc.tlinx.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYXJ-0006a9-Vj for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:04:50 -0400 Received: from [192.168.3.12] (Athenae [192.168.3.12]) by Ishtar.sc.tlinx.org (8.14.7/8.14.4/SuSE Linux 0.8) with ESMTP id v7494jMf084826; Fri, 4 Aug 2017 02:04:47 -0700 Message-ID: <598438AD.5020106@tlinx.org> Date: Fri, 04 Aug 2017 02:04:45 -0700 From: L A Walsh User-Agent: Thunderbird MIME-Version: 1.0 To: Paul Eggert Subject: Re: bug#27942: Bug regarding "touch" command References: <598435D8.5030607@tlinx.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit Cc: bug-coreutils@gnu.org, yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) Paul Eggert wrote: > L A Walsh wrote: >> "Touching the 'file' associated with stdout"? > > Yes, that's it. > >> How would I (or someone) use it? > > You run "touch -". Whatever file stdout happens to be associated with, > gets touched. It's the same idea as "cat -", except with stdout rather > than stdin. > The difference between that and updating due to write activity being mostly that ctime is also written? From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 05:10:39 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 09:10:39 +0000 Received: from localhost ([127.0.0.1]:40857 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYcx-00019w-6K for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:10:39 -0400 Received: from eggs.gnu.org ([208.118.235.92]:37364) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddYcv-00019j-DA for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:10:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYcp-0001ma-Dp for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:10:32 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_40, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,T_DKIM_INVALID, URIBL_BLOCKED autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:55819) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddYcp-0001mS-AS for submit@debbugs.gnu.org; Fri, 04 Aug 2017 05:10:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56563) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddYco-0004jp-69 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:10:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddYcn-0001lC-6g for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:10:30 -0400 Received: from mail-oi0-x232.google.com ([2607:f8b0:4003:c06::232]:33898) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ddYcn-0001ky-1X for bug-coreutils@gnu.org; Fri, 04 Aug 2017 05:10:29 -0400 Received: by mail-oi0-x232.google.com with SMTP id x3so9921046oia.1 for ; Fri, 04 Aug 2017 02:10:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=ak8HCugE4UfaqXv7mGAP6jx3HbjG3W1iyWpkw/kkGkM=; b=MgknIE/zx8+oXxKoSLdWY+q+Cq3fwzBSPVPov0ulQH61J5b9Nt9Mo+XXlWUF/zoYty 6hknrqNyFjyaRKhIAjs/xJbs6GCzuuLlO98R+B2+EiyVdePVw4nn2/tsEF+ZZia499XE WRDN7ZgvKlSdrRHmlfSNghKDKE7AUxcxDNAFXp0uj9oq57Sa0JamnrKPW3rcJCJ0qu+H rFvV3TIy1XnM0d6R2d3z/5+1o5+XuCa8cnTkcwy12lewpttqzZP4eQ05mr9j+w6vjBry dQ9xkzHnH8qMxiMFyJd56qg+rio8nkIB+855ZghV/N9U0U7PXbz6oR916Gx8RpxdIhUZ P7NQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=ak8HCugE4UfaqXv7mGAP6jx3HbjG3W1iyWpkw/kkGkM=; b=NEiBrBQTJ0SwRMxpJMAbqlrSm7GhMqj3w9iWF5kAId2ED27xXzICR9sdzrIzWl52gc lWKlB4O95b87A8FRPtxSlfb0vbdLNkf72wvt6HEQDzyFQluWAeMccik+DmN0JqSf3TP9 rjxVARde96AxRrB2BqUBb40pM0tFhS5a2WSv4VY3VWSq7VRopELsvpeHYKvTodQcsBdM pcxFeBZuzNVV3o4T4NYI0AEgcVmTxF23GEhXe5SWDAEv2UoNZVrVsfC8coYfcoDXK1Qq Ob/KWCXPdX9itzOlmugBVzrZKt1yz9lnEVLoBbJYgCiOf9oGSgxslT4ZHLvwKIexaa5G 3XoA== X-Gm-Message-State: AHYfb5jpJ2Z9HWH2teoiiSuwOpKmEDZrU/l9PEqWmdhJJZes5T8A46gO FbIXICATWc9tb1imWc4QIbav0Z6Wng== X-Received: by 10.202.1.201 with SMTP id 192mr1796185oib.163.1501837828468; Fri, 04 Aug 2017 02:10:28 -0700 (PDT) MIME-Version: 1.0 Received: by 10.182.24.68 with HTTP; Fri, 4 Aug 2017 02:09:48 -0700 (PDT) In-Reply-To: References: <598435D8.5030607@tlinx.org> From: pavan kumar yalavarthi Date: Fri, 4 Aug 2017 14:39:48 +0530 Message-ID: Subject: Re: bug#27942: Bug regarding "touch" command To: Paul Eggert Content-Type: multipart/alternative; boundary="001a1138e9b446bae80555e9de89" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -3.8 (---) X-Debbugs-Envelope-To: submit Cc: bash , L A Walsh X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.8 (---) --001a1138e9b446bae80555e9de89 Content-Type: text/plain; charset="UTF-8" Thanks, Can I know why does it work in linux flavours like Red Hat Linux,Kali Linux but not ubuntu flavours??? y.pavan kumar On Fri, Aug 4, 2017 at 2:31 PM, Paul Eggert wrote: > L A Walsh wrote: > >> "Touching the 'file' associated with stdout"? >> > > Yes, that's it. > > How would I (or someone) use it? >> > > You run "touch -". Whatever file stdout happens to be associated with, > gets touched. It's the same idea as "cat -", except with stdout rather than > stdin. > --001a1138e9b446bae80555e9de89 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks,=C2=A0
Can I know why does it work in linux fla= vours like Red Hat Linux,Kali Linux but not ubuntu flavours???

y.pavan kumar

On Fri, Aug 4, 2017 at 2:31 PM, Paul Eggert = <eggert@cs.ucla.edu> wrote:
L A Walsh wrote:
"Touching the 'file' associated with stdout"?

 Yes, that's it.

How would I (or someone) use it?

 You run "touch -". Whatever file stdout happens to be associated = with, gets touched. It's the same idea as "cat -", except wit= h stdout rather than stdin.

--001a1138e9b446bae80555e9de89-- From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 06:16:19 2017 Received: (at 27942) by debbugs.gnu.org; 4 Aug 2017 10:16:19 +0000 Received: from localhost ([127.0.0.1]:40909 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddZeV-0002ee-4s for submit@debbugs.gnu.org; Fri, 04 Aug 2017 06:16:19 -0400 Received: from mail-oi0-f41.google.com ([209.85.218.41]:35600) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddZeS-0002eR-VV for 27942@debbugs.gnu.org; Fri, 04 Aug 2017 06:16:17 -0400 Received: by mail-oi0-f41.google.com with SMTP id e124so11048300oig.2 for <27942@debbugs.gnu.org>; Fri, 04 Aug 2017 03:16:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=hEF1zRw+zsq7ebDrdKNquI4VxoexuYCfVVv7ockNNZk=; b=TodUCn5VMoER+l9wCPCxLrRTbpfqC10f+HrJ43go4GMTx52fUty9X+bdN3jj5nQjtq xf1Wg0oR1HxxQFsUvHeXAAyBZmwl4MXzQxNFtQTH/iEi8YzTsHJFnKUP9lyZp38pG7rv +UzBDNv2meFHGuy7KmOYIx896lIQTNpKoYa2V2ZYtUVsaIsS7Ebc+0HQyN/HbbOC0cYa 0CwAAfnxwm8o+TUjNR/Ws3wasmvR0l49H6BYzsi2hCAIkxClGTURObjREpkR+serxcEa x5HS9/NrKldT/hw8nSZyOBhOZmrYtSJUAKNmhqBokkCrAZ/bV5JDuBF8+2HWW2+hysAE qc3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=hEF1zRw+zsq7ebDrdKNquI4VxoexuYCfVVv7ockNNZk=; b=fBscFcMr0wM0Lt05ecayLoerh2TMqYNG13wRAivsIFJGBCoJ3ubWxWbPhJ1oMnWVaV O8DCVqMQyV+gv97mPUfDonfQawwzW9zLhEmrMWDb05tArSLB4IuSY1ABr8I/xO5lz/fO BUs6pC/Adp6KjZbA1kzvVi866fQfdl1joq37Kll055cIRspy0me8Y3YweFBE+OizlbaD lFtyTsnZ3XmTxrlGwakipsgQx7tjfzUFCL2APJUDkf3D0NRUV1Xe1infroBZTJPYud62 uUwgJRKPHQlSTeAXz9uZr3Z/UBPKJ59RpYEYehV3cBGKv804n5qmwu4CWbES8rIANxEg c6Og== X-Gm-Message-State: AHYfb5ibV8V3hOh55gQrKxQtywL7XxAw+CQLHiBvtCRcq/dwgl1fpYsK NJi0PQRXDvQB5U0dF+E+eOJ21V85KA== X-Received: by 10.202.1.201 with SMTP id 192mr1932160oib.163.1501841771103; Fri, 04 Aug 2017 03:16:11 -0700 (PDT) MIME-Version: 1.0 Received: by 10.182.24.68 with HTTP; Fri, 4 Aug 2017 03:15:30 -0700 (PDT) In-Reply-To: References: From: pavan kumar yalavarthi Date: Fri, 4 Aug 2017 15:45:30 +0530 Message-ID: Subject: Re: bug#27942: closed (Re: bug#27942: Bug regarding "touch" command) To: 27942@debbugs.gnu.org Content-Type: multipart/alternative; boundary="001a1138e9b4468db80555eac935" X-Spam-Score: 0.7 (/) X-Debbugs-Envelope-To: 27942 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: 0.7 (/) --001a1138e9b4468db80555eac935 Content-Type: text/plain; charset="UTF-8" Can you please explain why is this working fine in linux system y.pavan kumar On Fri, Aug 4, 2017 at 12:47 PM, GNU bug Tracking System < help-debbugs@gnu.org> wrote: > Your bug report > > #27942: Bug regarding "touch" command > > which was filed against the coreutils package, has been closed. > > The explanation is attached below, along with your original report. > If you require more details, please reply to 27942@debbugs.gnu.org. > > -- > 27942: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=27942 > GNU Bug Tracking System > Contact help-debbugs@gnu.org with problems > > > ---------- Forwarded message ---------- > From: Paul Eggert > To: pavan kumar yalavarthi , > 27942-done@debbugs.gnu.org > Cc: > Bcc: > Date: Fri, 4 Aug 2017 00:16:23 -0700 > Subject: Re: bug#27942: Bug regarding "touch" command > pavan kumar yalavarthi wrote: > >> " *touch -* " is not working i.e., file named " - " is not being created >> using *touch *command in* ubuntu* flavours , but working fine with* >> linux * >> flavours. >> > > It's not a bug. In coreutils, 'touch -' is documented to touch the > standard output file, not a file named '-'. The POSIX specification for > 'touch' allows either the coreutils behavior or the other behavior that you > mentioned. If you want to touch a file named '-', the command 'touch ./-' > is a portable way to do it. > > > > ---------- Forwarded message ---------- > From: pavan kumar yalavarthi > To: bug-coreutils@gnu.org > Cc: > Bcc: > Date: Fri, 4 Aug 2017 11:05:53 +0530 > Subject: Bug regarding "touch" command > " *touch -* " is not working i.e., file named " - " is not being created > using *touch *command in* ubuntu* flavours , but working fine with* > linux *flavours. > > --001a1138e9b4468db80555eac935 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Can you please explain why is this working fine in linux s= ystem

y.pava= n kumar

On Fri, Aug 4, 2017 at 12:47 PM, GNU bug Tra= cking System <help-debbugs@gnu.org> wrote:
Your bug report

#27942: Bug regarding "touch" command

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 27942@debbugs.gnu.org.

--
27942: http://debbugs.gnu.org/cgi/bugreport= .cgi?bug=3D27942
GNU Bug Tracking System
Contact help-debbugs@gnu.org wi= th problems


---------- Forwarded message ----------
From:=C2= =A0Paul Eggert <eggert@cs.ucla.edu= >
To:=C2=A0pavan kumar yalavarthi <yalavarthi.pavankumar.123@gmail.com>, 27942-done@debbugs.gnu.org<= br>Cc:=C2=A0
Bcc:=C2=A0
Date:=C2=A0Fri, 4 Aug 2017 00:16:23 -0700
= Subject:=C2=A0Re: bug#27942: Bug regarding "touch" command
pav= an kumar yalavarthi wrote:
" *touch=C2=A0 -* " is not working i.e., file named " - &quo= t; is not being created
using *touch *command in* ubuntu* flavours=C2=A0 , but working fine with* l= inux *
flavours.

It's not a bug. In coreutils, 'touch -' is documented to touch = the standard output file, not a file named '-'. The POSIX specifica= tion for 'touch' allows either the coreutils behavior or the other = behavior that you mentioned. If you want to touch a file named '-',= the command 'touch ./-' is a portable way to do it.



---------- Forwarded message ----------
From:=C2=A0pavan kumar y= alavarthi <yalava= rthi.pavankumar.123@gmail.com>
To:=C2=A0bug-coreutils@gnu.org
Cc:=C2=A0
Bcc:=C2=A0
Dat= e:=C2=A0Fri, 4 Aug 2017 11:05:53 +0530
Subject:=C2=A0Bug regarding "= ;touch" command
" touch =C2=A0-= " is not working i.e., file named " - " is not being create= d using touch command in ubuntu flavours =C2=A0, but w= orking fine with linux flavours.


--001a1138e9b4468db80555eac935-- From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 07:28:20 2017 Received: (at 27942) by debbugs.gnu.org; 4 Aug 2017 11:28:20 +0000 Received: from localhost ([127.0.0.1]:40958 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddamC-0004MG-2K for submit@debbugs.gnu.org; Fri, 04 Aug 2017 07:28:20 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40734) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddamA-0004M0-Fs for 27942@debbugs.gnu.org; Fri, 04 Aug 2017 07:28:19 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5EF02356C9; Fri, 4 Aug 2017 11:28:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 5EF02356C9 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=eblake@redhat.com Received: from [10.10.121.23] (ovpn-121-23.rdu2.redhat.com [10.10.121.23]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5778A68D20; Fri, 4 Aug 2017 11:28:11 +0000 (UTC) Subject: Re: bug#27942: Bug regarding "touch" command To: pavan kumar yalavarthi , Paul Eggert References: <598435D8.5030607@tlinx.org> From: Eric Blake Openpgp: url=http://people.redhat.com/eblake/eblake.gpg Organization: Red Hat, Inc. Message-ID: <72a1ee3f-c911-6214-65b6-ce76735b30ec@redhat.com> Date: Fri, 4 Aug 2017 06:28:09 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="sbFJVOb98Di0gLU6iL1Rx7KCLUiHIShQI" X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 04 Aug 2017 11:28:12 +0000 (UTC) X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: 27942 Cc: 27942@debbugs.gnu.org, coreutils@tlinx.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --sbFJVOb98Di0gLU6iL1Rx7KCLUiHIShQI Content-Type: multipart/mixed; boundary="64Axt7HL3g5WPWC9UGXaUu5MMS5WL2Ba4"; protected-headers="v1" From: Eric Blake To: pavan kumar yalavarthi , Paul Eggert Cc: 27942@debbugs.gnu.org, coreutils@tlinx.org Message-ID: <72a1ee3f-c911-6214-65b6-ce76735b30ec@redhat.com> Subject: Re: bug#27942: Bug regarding "touch" command References: <598435D8.5030607@tlinx.org> In-Reply-To: --64Axt7HL3g5WPWC9UGXaUu5MMS5WL2Ba4 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 08/04/2017 04:09 AM, pavan kumar yalavarthi wrote: > Thanks, [top-posting is harder to read on technical lists] > Can I know why does it work in linux flavours like Red Hat Linux,Kali L= inux > but not ubuntu flavours??? Perhaps you should compare 'touch --version' on the systems with differing behaviors. If the versions are different, it could be that you are using an older version on the one where it doesn't work (reading NEWS can confirm when the feature was changed; in the case of 'touch -', the behavior was changed for 5.90 back in 2005). If the versions claim to be the same (or newer than the point where NEWS documents that the change), then your vendor has applied a downstream patch, and you should ask your vendor to help you find their downstream patches and why they want the changed behavior from upstream. --=20 Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org --64Axt7HL3g5WPWC9UGXaUu5MMS5WL2Ba4-- --sbFJVOb98Di0gLU6iL1Rx7KCLUiHIShQI Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEzBAEBCAAdFiEEccLMIrHEYCkn0vOqp6FrSiUnQ2oFAlmEWkkACgkQp6FrSiUn Q2qM7Af8DVnFvWnDJr/KxR2ZIPYjcAjzsmn8j79SduK5mKTRkvHAk1OdKGn9Zk66 IS3OMzYjI9Cz/Qr+uCkYLHQlrL5Y4TaXmsDS0vBGJqcwVMmf9yiL6k+FoegaxK9i wS4+lKcgkAGLoGeChnwjMoBLcFP1xHwU6yYIS6M6gpbK/h7aQtVHTDh0b7xWvncs uDE1QK/iS91dhMx7lD+Kg11sXSc9WjV4tLRdo4KujugvEXAQJgHXsmBmlEt3OLF3 VoM1QyFXo4GdFw5pz1JKnZ3XaOs/pZqgpEm4X8sHcXFnIN1UqV/AwdpIQYhZAVwA C+3EuuXMrqtvjEZ+89YhaDDbK0+wvQ== =RKqZ -----END PGP SIGNATURE----- --sbFJVOb98Di0gLU6iL1Rx7KCLUiHIShQI-- From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 10:40:10 2017 Received: (at 27942) by debbugs.gnu.org; 4 Aug 2017 14:40:10 +0000 Received: from localhost ([127.0.0.1]:41925 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dddlq-0002Pq-Ds for submit@debbugs.gnu.org; Fri, 04 Aug 2017 10:40:10 -0400 Received: from mail-oi0-f44.google.com ([209.85.218.44]:34712) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dddlo-0002Pd-Hf for 27942@debbugs.gnu.org; Fri, 04 Aug 2017 10:40:08 -0400 Received: by mail-oi0-f44.google.com with SMTP id x3so16756734oia.1 for <27942@debbugs.gnu.org>; Fri, 04 Aug 2017 07:40:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=JbeAU4PaXVeS/kzrywfKGh8z7li/vVuqLFtv0SdB/9g=; b=FbjnwfrAGq8QOasZI8HNSWaYFVqPmiUUYBbr6rmQ7HNY6sKAFTcoLK7XSXdjKaoAKp Z4ubu9ACHS8nrg6e80ZfcXtZd1VGhofrBnvblVYPc1RWB12pVjBag3LH2GyBTDeO3rXI JAlCyQGeoysvfnvLynSf3ZOTUzu2ztHHfAPUAaXCAlzll8AJ39tW5nJeF8EAfnL1Zvtx ELsbemkL9GaWpnWzWgqtT1GTOoWB6nmEU3O+KbN9JYkNxy5IYtTQitSkr11ofhlHDwzM IM2QXjp3xWb/D+f6975Uij1xT3NTIx5zNl18FTGa9vVKVOmOcqTnH92Sy6mBXj8NRFi9 8KXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=JbeAU4PaXVeS/kzrywfKGh8z7li/vVuqLFtv0SdB/9g=; b=tuYR88PgaGBzVLtODT4WE0xytUl+p7nGWVALx3EbjA6CkpHDkiyk3FMI+4whTwenYI XV0IxasuLnzAFAB6wpsivgWjDbAqoSKpoa1d61y1ilzcpN/QHojF0GAGOm1VFq4XHbwm wuQoLX5k9fqvB9qPHGWEJ5av59zx/5NR+9StCLVRzNDImoTCCEASr3rganhE3cn6qBBe /3l4ZGXzJS+CFMzOo3qg6AiJROjLR9n9i41vvV7Vkf4Ubjk2W0DZ138Gr/XCzB+lWzFu iGwh8/1qgJOgE61wtSh898Tux5RTQAW3E2UmA6XYnZ64sq/v5Pz+HuIegsHTpNeIqWnJ 2lgg== X-Gm-Message-State: AHYfb5h4RnWNGFKH35BBqwZvtkuAbUSbIWDxRHtBRGnt1YfEym3ruHBu kynLfl+792DW+uG3Q91HUe58idGS6w== X-Received: by 10.202.180.4 with SMTP id d4mr1793123oif.143.1501857601667; Fri, 04 Aug 2017 07:40:01 -0700 (PDT) MIME-Version: 1.0 Received: by 10.182.24.68 with HTTP; Fri, 4 Aug 2017 07:40:01 -0700 (PDT) Received: by 10.182.24.68 with HTTP; Fri, 4 Aug 2017 07:40:01 -0700 (PDT) In-Reply-To: <72a1ee3f-c911-6214-65b6-ce76735b30ec@redhat.com> References: <598435D8.5030607@tlinx.org> <72a1ee3f-c911-6214-65b6-ce76735b30ec@redhat.com> From: pavan kumar yalavarthi Date: Fri, 4 Aug 2017 20:10:01 +0530 Message-ID: Subject: Re: bug#27942: Bug regarding "touch" command To: Eric Blake Content-Type: multipart/alternative; boundary="001a113d4232d9cfe00555ee78e7" X-Spam-Score: -2.0 (--) X-Debbugs-Envelope-To: 27942 Cc: Paul Eggert , L A Walsh , 27942@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.0 (--) --001a113d4232d9cfe00555ee78e7 Content-Type: text/plain; charset="UTF-8" Thank you for the clarification. On Aug 4, 2017 4:58 PM, "Eric Blake" wrote: > On 08/04/2017 04:09 AM, pavan kumar yalavarthi wrote: > > Thanks, > > [top-posting is harder to read on technical lists] > > > Can I know why does it work in linux flavours like Red Hat Linux,Kali > Linux > > but not ubuntu flavours??? > > Perhaps you should compare 'touch --version' on the systems with > differing behaviors. If the versions are different, it could be that > you are using an older version on the one where it doesn't work (reading > NEWS can confirm when the feature was changed; in the case of 'touch -', > the behavior was changed for 5.90 back in 2005). If the versions claim > to be the same (or newer than the point where NEWS documents that the > change), then your vendor has applied a downstream patch, and you should > ask your vendor to help you find their downstream patches and why they > want the changed behavior from upstream. > > -- > Eric Blake, Principal Software Engineer > Red Hat, Inc. +1-919-301-3266 > Virtualization: qemu.org | libvirt.org > > --001a113d4232d9cfe00555ee78e7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thank you for the clarification.=C2=A0

On Aug 4, 2017 4:58 PM, "= Eric Blake" <eblake@redhat.com= > wrote:
On 0= 8/04/2017 04:09 AM, pavan kumar yalavarthi wrote:
> Thanks,

[top-posting is harder to read on technical lists]

> Can I know why does it work in linux flavours like Red Hat Linux,Kali = Linux
> but not ubuntu flavours???

Perhaps you should compare 'touch --version' on the systems with differing behaviors.=C2=A0 If the versions are different, it could be that<= br> you are using an older version on the one where it doesn't work (readin= g
NEWS can confirm when the feature was changed; in the case of 'touch -&= #39;,
the behavior was changed for 5.90 back in 2005).=C2=A0 If the versions clai= m
to be the same (or newer than the point where NEWS documents that the
change), then your vendor has applied a downstream patch, and you should ask your vendor to help you find their downstream patches and why they
want the changed behavior from upstream.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+1-919-301-3266
Virtualization:=C2=A0 qemu.org | libvirt.org

--001a113d4232d9cfe00555ee78e7-- From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 12:18:10 2017 Received: (at submit) by debbugs.gnu.org; 4 Aug 2017 16:18:10 +0000 Received: from localhost ([127.0.0.1]:41984 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddfIg-0004e8-6l for submit@debbugs.gnu.org; Fri, 04 Aug 2017 12:18:10 -0400 Received: from eggs.gnu.org ([208.118.235.92]:37876) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddfIe-0004dv-DF for submit@debbugs.gnu.org; Fri, 04 Aug 2017 12:18:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddfIY-0004TX-Hl for submit@debbugs.gnu.org; Fri, 04 Aug 2017 12:18:03 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:38549) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddfIY-0004TN-E4 for submit@debbugs.gnu.org; Fri, 04 Aug 2017 12:18:02 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57074) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddfIX-00074J-6E for bug-coreutils@gnu.org; Fri, 04 Aug 2017 12:18:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddfIS-0004PS-JK for bug-coreutils@gnu.org; Fri, 04 Aug 2017 12:18:01 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:47822) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddfIS-0004Nx-Ca for bug-coreutils@gnu.org; Fri, 04 Aug 2017 12:17:56 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 9587816074E; Fri, 4 Aug 2017 09:17:54 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id HFzL-aUcZYID; Fri, 4 Aug 2017 09:17:54 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id E761F160750; Fri, 4 Aug 2017 09:17:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id b0KOQtbxggEQ; Fri, 4 Aug 2017 09:17:53 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.153.184.153]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id C91DB160744; Fri, 4 Aug 2017 09:17:53 -0700 (PDT) Subject: Re: bug#27942: Bug regarding "touch" command To: L A Walsh References: <598435D8.5030607@tlinx.org> <598438AD.5020106@tlinx.org> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <368d878c-7229-298b-288e-d447abcb3109@cs.ucla.edu> Date: Fri, 4 Aug 2017 09:17:50 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <598438AD.5020106@tlinx.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Debbugs-Envelope-To: submit Cc: bug-coreutils@gnu.org, yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) L A Walsh wrote: >> You run "touch -". Whatever file stdout happens to be associated with,= gets=20 >> touched. It's the same idea as "cat -", except with stdout rather than= stdin. >> >=20 > The difference between that and updating due to write activity being > mostly that ctime is also written? No, that's not a difference. Try running 'touch foo; strace touch foo; st= race=20 touch - >>foo'. I did that, and saw the same system call being used to al= ter=20 foo's last-modified time, in both strace outputs. From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 04 23:45:23 2017 Received: (at submit) by debbugs.gnu.org; 5 Aug 2017 03:45:23 +0000 Received: from localhost ([127.0.0.1]:42324 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddq1i-0005wP-Qc for submit@debbugs.gnu.org; Fri, 04 Aug 2017 23:45:23 -0400 Received: from eggs.gnu.org ([208.118.235.92]:51835) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddq1h-0005wA-1r for submit@debbugs.gnu.org; Fri, 04 Aug 2017 23:45:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddq1b-00069e-5e for submit@debbugs.gnu.org; Fri, 04 Aug 2017 23:45:15 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:48845) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddq1b-00069U-2T for submit@debbugs.gnu.org; Fri, 04 Aug 2017 23:45:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42806) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddq1a-0002WA-45 for bug-coreutils@gnu.org; Fri, 04 Aug 2017 23:45:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddq1V-00064o-6W for bug-coreutils@gnu.org; Fri, 04 Aug 2017 23:45:14 -0400 Received: from ishtar.tlinx.org ([173.164.175.65]:55590 helo=Ishtar.sc.tlinx.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddq1U-0005xO-LW for bug-coreutils@gnu.org; Fri, 04 Aug 2017 23:45:09 -0400 Received: from [192.168.3.12] (Athenae [192.168.3.12]) by Ishtar.sc.tlinx.org (8.14.7/8.14.4/SuSE Linux 0.8) with ESMTP id v753iula056601; Fri, 4 Aug 2017 20:44:58 -0700 Message-ID: <59853F38.7000302@tlinx.org> Date: Fri, 04 Aug 2017 20:44:56 -0700 From: L A Walsh User-Agent: Thunderbird MIME-Version: 1.0 To: Paul Eggert Subject: Re: bug#27942: Bug regarding "touch" command References: <598435D8.5030607@tlinx.org> <598438AD.5020106@tlinx.org> <368d878c-7229-298b-288e-d447abcb3109@cs.ucla.edu> In-Reply-To: <368d878c-7229-298b-288e-d447abcb3109@cs.ucla.edu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit Cc: bug-coreutils@gnu.org, yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) Paul Eggert wrote: > L A Walsh wrote: >>> You run "touch -". Whatever file stdout happens to be associated >>> with, gets touched. It's the same idea as "cat -", except with stdout >>> rather than stdin. >>> >> >> The difference between that and updating due to write activity being >> mostly that ctime is also written? > > No, that's not a difference. Try running 'touch foo; strace touch foo; > strace touch - >>foo'. I did that, and saw the same system call being > used to alter foo's last-modified time, in both strace outputs. --- So the touch command does the same as: echo -n >>'stdout-file' ? What was the use-case that touch needed to have the new feature? *curious sort* From debbugs-submit-bounces@debbugs.gnu.org Sat Aug 05 01:29:14 2017 Received: (at submit) by debbugs.gnu.org; 5 Aug 2017 05:29:15 +0000 Received: from localhost ([127.0.0.1]:42344 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddreE-0008Nm-M3 for submit@debbugs.gnu.org; Sat, 05 Aug 2017 01:29:14 -0400 Received: from eggs.gnu.org ([208.118.235.92]:39983) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddreC-0008NZ-Kh for submit@debbugs.gnu.org; Sat, 05 Aug 2017 01:29:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddre6-0002Ay-7U for submit@debbugs.gnu.org; Sat, 05 Aug 2017 01:29:07 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_05 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:40509) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddre6-0002Ae-4k for submit@debbugs.gnu.org; Sat, 05 Aug 2017 01:29:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59164) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ddre4-0007Kd-Uo for bug-coreutils@gnu.org; Sat, 05 Aug 2017 01:29:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ddre0-00025R-RQ for bug-coreutils@gnu.org; Sat, 05 Aug 2017 01:29:04 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:47328) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ddre0-00023S-K4 for bug-coreutils@gnu.org; Sat, 05 Aug 2017 01:29:00 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id D6EBC160767; Fri, 4 Aug 2017 22:28:57 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 0gCIhRvcqaSd; Fri, 4 Aug 2017 22:28:57 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 37411160766; Fri, 4 Aug 2017 22:28:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id XH1pTWRGKyh1; Fri, 4 Aug 2017 22:28:57 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.153.184.153]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 16D37160749; Fri, 4 Aug 2017 22:28:57 -0700 (PDT) Subject: Re: bug#27942: Bug regarding "touch" command To: L A Walsh References: <598435D8.5030607@tlinx.org> <598438AD.5020106@tlinx.org> <368d878c-7229-298b-288e-d447abcb3109@cs.ucla.edu> <59853F38.7000302@tlinx.org> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <09aa1e7c-6e58-63b0-9a6c-5fc528bde337@cs.ucla.edu> Date: Fri, 4 Aug 2017 22:28:56 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <59853F38.7000302@tlinx.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Debbugs-Envelope-To: submit Cc: bug-coreutils@gnu.org, yalavarthi.pavankumar.123@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) L A Walsh wrote: > So the touch command does the same as: > echo -n >>'stdout-file' ? Not really. > What was the use-case that touch needed to have > the new feature? It was mainly a desire to get back to the original Unix model, where basi= c=20 commands like 'touch' were thin wrappers around system calls. From unknown Fri Jun 20 07:14:16 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Sat, 02 Sep 2017 11:24:05 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator