From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A61BC433DF for ; Mon, 25 May 2020 15:08:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B9A7E2073B for ; Mon, 25 May 2020 15:08:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=jguk.org header.i=@jguk.org header.b="QyqyILBS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391041AbgEYPIm (ORCPT ); Mon, 25 May 2020 11:08:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391007AbgEYPIm (ORCPT ); Mon, 25 May 2020 11:08:42 -0400 Received: from mail-wm1-x32d.google.com (mail-wm1-x32d.google.com [IPv6:2a00:1450:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEF1FC061A0E for ; Mon, 25 May 2020 08:08:41 -0700 (PDT) Received: by mail-wm1-x32d.google.com with SMTP id u12so298962wmd.3 for ; Mon, 25 May 2020 08:08:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jguk.org; s=google; h=to:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=u18bxgkZcyxLeaqNI2VR5CPe5XJNWkhnywBxi+QPLdk=; b=QyqyILBSdZHOccdSzzK9+Iehp15nodjurD1YClhj9p+c4QzTmLioCbJMZoZaN0H+nk 8Zx/URsOSXhAkp4CRLlfZlUkT+ILVyvbc6AE1nWC4W2TwKvHURTNeCbaayphbCc3l0sC AyssGHLjqDW91a6OnDrgXo09Eg8I11OIqkbZVNbj0GP9KyAiQtxO/4NbTc8SGqZvYdY7 yFgM5pOcJemBaenj0G0AN0F354HC9SBcUU/PXt7vhGQCWV/1XT+BLjULELKS22XUxFpk 1h9xsOsB8kdshvEQoLb99EaVxRU7+uyBpgwwEknTc1+X3N9ydZMaiDr3D+5wIHpINvhA QS0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=u18bxgkZcyxLeaqNI2VR5CPe5XJNWkhnywBxi+QPLdk=; b=n3BOPC6VagWuHCjl/Yp0n8LonkKEJb3PPEnSv+8kGhjB5jgTkLaVTyDlL19dGX1k6f Enz9rF2df8crKaxfetJg9kvVWh4uuSzAQDvib4/qgoqBr7JfVN+dPuOcTMz28/+DNmSo Z/46qddvFNV35hiuU80xE6gp5DgkuBPIzc1e+Isks/qomFbv2V5NeQYFuBoc6U3IG/mC EZSsS7rB2FN2Qbj5KSBJYxIpk9xeM6zaf25ikAw2y+vLtBaweoyCsJGdZOJsXKRYzu/h 8JLPjkK7j6r/SmfEedNxWLu8JB2J+Pe6ldt6fD9zlh4M1yWmtJ6AUh1VRXoJPiDk0Ovj sweA== X-Gm-Message-State: AOAM533bREyeZ7Z5AYv0oWqbRJslpB7/nMu3XGx45dwUauPBTlgy+Ong VbKMpNFdNVljJTWI4JeETA3OfIuP+aw= X-Google-Smtp-Source: ABdhPJzPGnT0W4YSgvPjQNt75MK4EUWq1L/tpkmuAso2LyauhjR0BN83vRTwQUFZsWE8NpxtiaG2fg== X-Received: by 2002:a1c:67c3:: with SMTP id b186mr13940742wmc.167.1590419320165; Mon, 25 May 2020 08:08:40 -0700 (PDT) Received: from [192.168.0.12] (cpc87281-slou4-2-0-cust47.17-4.cable.virginm.net. [92.236.12.48]) by smtp.gmail.com with ESMTPSA id 94sm19237231wrf.74.2020.05.25.08.08.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 May 2020 08:08:39 -0700 (PDT) To: Michael Kerrisk , linux-man From: Jonny Grant Subject: core sysctl Message-ID: <9e98156e-3ba9-e656-bb8f-c54229b5ac11@jguk.org> Date: Mon, 25 May 2020 16:08:38 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Suggestion for some additional information on this page: http://man7.org/linux/man-pages/man5/core.5.html Could "Core dumps and systemd" be extended to give an example of sysctl making a temporary change? eg set to the filename and signal that causes the core dump: # sysctl -w kernel.core_pattern="%e-%s.core" Cheers, Jonny