Assaf Gordon <assafgordon@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Assaf Gordon <assafgordon@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 30928) by debbugs.gnu.org; 1 Apr 2018 17:03:11 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Apr 01 13:03:11 2018 Received: from localhost ([127.0.0.1]:34454 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1f2gNq-0001Lp-Uo for submit <at> debbugs.gnu.org; Sun, 01 Apr 2018 13:03:11 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:38256) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1f2gNo-0001Lc-Lu for 30928 <at> debbugs.gnu.org; Sun, 01 Apr 2018 13:03:09 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 3BE121616D2; Sun, 1 Apr 2018 10:03:02 -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 SOpy5fi9yN_z; Sun, 1 Apr 2018 10:03:01 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 8D52A1616F5; Sun, 1 Apr 2018 10:03:01 -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 o4X6KEybV471; Sun, 1 Apr 2018 10:03:01 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.154.30.119]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 67E341616D2; Sun, 1 Apr 2018 10:03:01 -0700 (PDT) Subject: Re: bug#30928: no error val returned by 'nice' failure? To: =?UTF-8?Q?P=c3=a1draig_Brady?= <P@HIDDEN>, L A Walsh <coreutils@HIDDEN> References: <5AB6A8E6.2090606@HIDDEN> <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> <5AB6E00E.4010800@HIDDEN> <cc8682e3-6bb0-0213-ff59-2d4921f53508@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department Message-ID: <38265b4e-0647-ab26-b91e-ba212e454bab@HIDDEN> Date: Sun, 1 Apr 2018 10:03:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <cc8682e3-6bb0-0213-ff59-2d4921f53508@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 30928 Cc: 30928 <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: -2.3 (--) P=C3=A1draig Brady wrote: > I wonder could we special case `nice true` > to indicate the nice return That would lead to a problem where 'nice true' succeeds but 'nice cmd' (f= or=20 whatever reason) does not. Perhaps the OS has a limit as to how many proc= esses=20 you can 'nice', for example. It'd be safer to add an option to avoid such= race=20 conditions. Plus, as you mention it'd be less hacky, which means it'd be = more=20 straightforward to document.
bug-coreutils@HIDDEN:bug#30928; Package coreutils.
Full text available.Received: (at 30928) by debbugs.gnu.org; 31 Mar 2018 23:00:41 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 31 19:00:41 2018 Received: from localhost ([127.0.0.1]:33377 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1f2PUH-00077s-2r for submit <at> debbugs.gnu.org; Sat, 31 Mar 2018 19:00:41 -0400 Received: from mail.magicbluesmoke.com ([82.195.144.49]:35274) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <P@HIDDEN>) id 1f2PUF-00075S-8h for 30928 <at> debbugs.gnu.org; Sat, 31 Mar 2018 19:00:39 -0400 Received: from localhost.localdomain (unknown [76.21.115.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.magicbluesmoke.com (Postfix) with ESMTPSA id 05E189E46; Sun, 1 Apr 2018 00:00:37 +0100 (IST) Subject: Re: bug#30928: no error val returned by 'nice' failure? To: L A Walsh <coreutils@HIDDEN>, Paul Eggert <eggert@HIDDEN> References: <5AB6A8E6.2090606@HIDDEN> <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> <5AB6E00E.4010800@HIDDEN> From: =?UTF-8?Q?P=c3=a1draig_Brady?= <P@HIDDEN> Message-ID: <cc8682e3-6bb0-0213-ff59-2d4921f53508@HIDDEN> Date: Sat, 31 Mar 2018 16:00:36 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <5AB6E00E.4010800@HIDDEN> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 30928 Cc: 30928 <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: 0.0 (/) On 24/03/18 16:32, L A Walsh wrote: > > > Paul Eggert wrote: >> L A Walsh wrote: >>> how do you tell if the resetting of the >>> priority worked or failed? >> >> I guess you're supposed to look at stderr, which is what you did. >> >> This is the way 'nice' has behaved for quite some time, and it's what POSIX >> specifies. We'd need a real good reason to change it, given that changing it >> would no doubt break stuff. > --- > How about a flag, like -e for 'fail on failure to change priority' and > (maybe less important or useful) '-w' to only return nice's return > value, with the posix error message returned for called app (if error). > > So, > nice -e --19 sleep 99 > would return immediately if not root with exit status for EPERM (and > no text); sleep would not be executed. > > and for -w case: > > nice -w --19 ls noexist > would return status for EPERM, and message: > ls: cannot access 'noexist': No such file or directory > > Seems those would cover most possibly wants, though > the first would be enough to determine if nice is going to work. > > Not an earth-shattering change, but at least it would allow > some way to check if nice is going to work or not so > one could not use it where it would fail (and not > generate an error message). I wonder could we special case `nice true` to indicate the nice return, so you could then: nice true && nice cmd || exit That would be forwards compat, and backwards compat in the sense it would degrade to the current situation. It's probably a bit hacky though. Pádraig
bug-coreutils@HIDDEN:bug#30928; Package coreutils.
Full text available.Received: (at 30928) by debbugs.gnu.org; 24 Mar 2018 23:32:44 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 24 19:32:44 2018 Received: from localhost ([127.0.0.1]:51977 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ezseS-0006fI-Ct for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 19:32:44 -0400 Received: from ishtar.tlinx.org ([173.164.175.65]:41406 helo=Ishtar.sc.tlinx.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <coreutils@HIDDEN>) id 1ezseQ-0006f9-2n for 30928 <at> debbugs.gnu.org; Sat, 24 Mar 2018 19:32:42 -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 w2ONWTAF060783; Sat, 24 Mar 2018 16:32:31 -0700 Message-ID: <5AB6E00E.4010800@HIDDEN> Date: Sat, 24 Mar 2018 16:32:30 -0700 From: L A Walsh <coreutils@HIDDEN> User-Agent: Thunderbird MIME-Version: 1.0 To: Paul Eggert <eggert@HIDDEN> Subject: Re: bug#30928: no error val returned by 'nice' failure? References: <5AB6A8E6.2090606@HIDDEN> <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> In-Reply-To: <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 30928 Cc: 30928 <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: -0.0 (/) Paul Eggert wrote: > L A Walsh wrote: >> how do you tell if the resetting of the >> priority worked or failed? > > I guess you're supposed to look at stderr, which is what you did. > > This is the way 'nice' has behaved for quite some time, and it's what POSIX > specifies. We'd need a real good reason to change it, given that changing it > would no doubt break stuff. --- How about a flag, like -e for 'fail on failure to change priority' and (maybe less important or useful) '-w' to only return nice's return value, with the posix error message returned for called app (if error). So, nice -e --19 sleep 99 would return immediately if not root with exit status for EPERM (and no text); sleep would not be executed. and for -w case: nice -w --19 ls noexist would return status for EPERM, and message: ls: cannot access 'noexist': No such file or directory Seems those would cover most possibly wants, though the first would be enough to determine if nice is going to work. Not an earth-shattering change, but at least it would allow some way to check if nice is going to work or not so one could not use it where it would fail (and not generate an error message). Thanks,..
bug-coreutils@HIDDEN:bug#30928; Package coreutils.
Full text available.Received: (at 30928) by debbugs.gnu.org; 24 Mar 2018 23:07:14 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 24 19:07:14 2018 Received: from localhost ([127.0.0.1]:51967 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ezsFm-00063t-1w for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 19:07:14 -0400 Received: from mout.kundenserver.de ([217.72.192.73]:52423) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1ezsFk-00063e-UH for 30928 <at> debbugs.gnu.org; Sat, 24 Mar 2018 19:07:13 -0400 Received: from [192.168.101.10] ([91.12.163.69]) by mrelayeu.kundenserver.de (mreue102 [212.227.15.183]) with ESMTPSA (Nemesis) id 0MLy2e-1ewYKa43g4-007ihU; Sun, 25 Mar 2018 00:06:49 +0100 Subject: Re: bug#30928: no error val returned by 'nice' failure? To: Paul Eggert <eggert@HIDDEN>, L A Walsh <coreutils@HIDDEN>, 30928 <at> debbugs.gnu.org References: <5AB6A8E6.2090606@HIDDEN> <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> From: Bernhard Voelker <mail@HIDDEN> Message-ID: <f2a02f84-920e-af4c-756a-03179079e6a5@HIDDEN> Date: Sun, 25 Mar 2018 00:06:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K0:6pxPEGQbrrK27YiOOSUoi5m3N0w8U3YqH7murZttqSAR1lQQbH/ gIY/lUrUq2es4ptOqJNFE7aQxysOalrGArXIhcQshaSwmvJbvG5J3QrKuCN54IflrlzHfSz lDstpnwGWrLl9YTga1d7HE1yM0QRhEFkoqYMpNUGJneKZKDzr5qqoTN2oZcya//k65DvhXU Wm+Yf2UoMDgweqPA+gkJw== X-UI-Out-Filterresults: notjunk:1;V01:K0:slLqNnn0Qc4=:6jDQSMKSAn6xNFY5/tvjgn /XsrOHUl2cds7IK8eNjC0XPbux/tqtM7j0HS5k2UOMwmLc/rLooLkpyLUjYOzIlaB/2wzszZj xZEV+Ul+FKdM2KuO/lvoyXeGvxI4sOWAuZxg873WMDGogGtzIpxh0+l3LCL00YyKAU/8QmfFu T/mOE6E3oGRyg62bViSbQ0Gqu2T3cdkaTq+PM2o2ViK3O50ih8XTMA/MmQ6VIPOdh6aGoMezK XRG2a1sGrNzeOwJiv7Pm3uTU9SyxXF4nSncg+2lMMRGEWo8ucnPr3nt0S0OpILzGlFshc54XG +WD140trAzHBiiszbNmhIrUd5E8t3reBFf7NYKU741GqpNrXoutKO0rCdMoRsoN0Hwxa7irRM K91lzOE78ae90V3Fz0kZul42T7jHReKWsBATFPgEgSLmV4177Kcxy2V3kegTfJFizOcwp23hM +tU7JwRr5XNcUwps3p6i5NShdJBIBP3Hlu4zPrhEeW0v4rx2XIH//ha1y0DDDiyatqJGYuZaD gawHhClTjwbqcqOogOxhVnh2yFGS7baRzTxk0zL97lRBccJQdaLuKQDVexZ4YKnxqkfmkaUon 0IHFsEUeEj1keUsoltTax5JLCQsvizYHLiodf4nVb6+rx0x4uitmI+kGrwOq+DeFjEEaSf4FK bBY5bxqerKNIpdcLEd9guDhB6XkT9vWxJU2vP8lAPNQSwvQ/kz0zhRGC5PGVMy5M4fmnPXjrE GpYEuviRTM7zqxhz9kSHrEq6qbm+Imy07/4v1bJ/H3PAeGooWUcfGeI6GEA= X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 30928 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: 0.0 (/) On 03/24/2018 10:09 PM, Paul Eggert wrote: > L A Walsh wrote: >> how do you tell if the resetting of the >> priority worked or failed? > > I guess you're supposed to look at stderr, which is what you did. > > This is the way 'nice' has behaved for quite some time, and it's what POSIX > specifies. We'd need a real good reason to change it, given that changing it > would no doubt break stuff. Anyway, it wouldn't harm to document this behavior in the Texinfo manual... the sentence from the POSIX spec sounds quote good: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/nice.html If the user lacks appropriate privileges to affect the nice value in the requested manner, the nice utility shall not affect the nice value; in this case, a warning message may be written to standard error, but this shall not prevent the invocation of /utility/ or affect the exit status. Have a nice day, Berny
bug-coreutils@HIDDEN:bug#30928; Package coreutils.
Full text available.Received: (at 30928) by debbugs.gnu.org; 24 Mar 2018 21:09:31 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 24 17:09:31 2018 Received: from localhost ([127.0.0.1]:51911 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ezqPr-0001Oh-KQ for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 17:09:31 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:45454) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1ezqPo-0001OR-5U for 30928 <at> debbugs.gnu.org; Sat, 24 Mar 2018 17:09:28 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id D380B1616AC; Sat, 24 Mar 2018 14:09:22 -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 ELhR3qMdSgwY; Sat, 24 Mar 2018 14:09:22 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id E79EB1616B5; Sat, 24 Mar 2018 14:09:21 -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 CAUFtSYyJEL3; Sat, 24 Mar 2018 14:09:21 -0700 (PDT) Received: from [192.168.1.9] (unknown [47.154.30.119]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id AF9C01616AC; Sat, 24 Mar 2018 14:09:21 -0700 (PDT) Subject: Re: bug#30928: no error val returned by 'nice' failure? To: L A Walsh <coreutils@HIDDEN>, 30928 <at> debbugs.gnu.org References: <5AB6A8E6.2090606@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department Message-ID: <16d003ef-5b33-fbf7-942d-10b41885f224@HIDDEN> Date: Sat, 24 Mar 2018 14:09:21 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <5AB6A8E6.2090606@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 30928 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: -2.3 (--) L A Walsh wrote: > how do you tell if the resetting of the > priority worked or failed? I guess you're supposed to look at stderr, which is what you did. This is the way 'nice' has behaved for quite some time, and it's what POSIX specifies. We'd need a real good reason to change it, given that changing it would no doubt break stuff.
bug-coreutils@HIDDEN:bug#30928; Package coreutils.
Full text available.Received: (at submit) by debbugs.gnu.org; 24 Mar 2018 19:49:02 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 24 15:49:02 2018 Received: from localhost ([127.0.0.1]:51776 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ezp9x-0007lz-UW for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 15:49:02 -0400 Received: from eggs.gnu.org ([208.118.235.92]:41655) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <coreutils@HIDDEN>) id 1ezp9w-0007lj-29 for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 15:49:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <coreutils@HIDDEN>) id 1ezp8m-0002YV-Pu for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 15:48:54 -0400 Received: from lists.gnu.org ([2001:4830:134:3::11]:58458) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <coreutils@HIDDEN>) id 1ezp8m-0002YH-ME for submit <at> debbugs.gnu.org; Sat, 24 Mar 2018 15:47:48 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57350) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <coreutils@HIDDEN>) id 1ezp4b-00032l-J8 for bug-coreutils@HIDDEN; Sat, 24 Mar 2018 15:47:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <coreutils@HIDDEN>) id 1ezoyb-0005DJ-M9 for bug-coreutils@HIDDEN; Sat, 24 Mar 2018 15:38:23 -0400 Received: from ishtar.tlinx.org ([173.164.175.65]:41422 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 <coreutils@HIDDEN>) id 1ezoyb-0005AU-C9 for bug-coreutils@HIDDEN; Sat, 24 Mar 2018 15:37:17 -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 w2OJbADB087122 for <bug-coreutils@HIDDEN>; Sat, 24 Mar 2018 12:37:13 -0700 Message-ID: <5AB6A8E6.2090606@HIDDEN> Date: Sat, 24 Mar 2018 12:37:10 -0700 From: L A Walsh <coreutils@HIDDEN> User-Agent: Thunderbird MIME-Version: 1.0 To: bug-coreutils@HIDDEN Subject: no error val returned by 'nice' failure? 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 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: -5.0 (-----) I executed a command: nice --19 sleep 5 and hoped to get back a status as to whether or not I was allowed to use a negative priority, since on Windows, anyone in the Admin group can set a priority, with the above command running sleep at 'High' priority, but on linux: > nice --19 sleep 1 nice --19 sleep 1 nice: cannot set niceness: Permission denied > echo $? 0 nice has an error setting the priority, but doesn't set any status in the return code. Shouldn't nice's exit value be something like EPERM if it couldn't set the priority -- whether or not it executed the command... Otherwise, how do you tell if the resetting of the priority worked or failed?
L A Walsh <coreutils@HIDDEN>:bug-coreutils@HIDDEN.
Full text available.bug-coreutils@HIDDEN:bug#30928; Package coreutils.
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