From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id D230B1382C5 for ; Wed, 1 Jul 2020 16:38:59 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id DD967E0950; Wed, 1 Jul 2020 16:38:52 +0000 (UTC) Received: from mail-40140.protonmail.ch (mail-40140.protonmail.ch [185.70.40.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 748F2E0900 for ; Wed, 1 Jul 2020 16:38:52 +0000 (UTC) Date: Wed, 01 Jul 2020 16:38:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1593621527; bh=w73iJRuJdiTvgYR2XZQ/dRfOy0YquPjnqHs7S+Xz+Ng=; h=Date:To:From:Reply-To:Subject:From; b=Y3W88swanQyLDxM2WlIhlB0ifm4r8I34eUKt202o+0ZDzabzC3Q6Rk4aFcprTRayo eZRcJBSqSGT2Hcg1dFr9YsBwz7Uppk7m+eDt85y3LwNSk5/SFnP+sjqy0ve9/zKQ5Z VsXRxBhJx8hx5o+W7hWDhy440TX9XiCj+uHHVtA8= To: Gentoo From: Caveman Al Toraboran Subject: [gentoo-user] arpwatch changed syntax? Message-ID: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.2 required=7.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM shortcircuit=no autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on mail.protonmail.ch X-Archives-Salt: e26eab97-aa89-4c8a-b23d-e98316847fd3 X-Archives-Hash: 8dcce9b56b7d7fa0c0ebfdc28cd4bc74 hi. background: ----------- previously, i used to run it by this: > arpwatch -i enp7s0 -m caveman@domain.com -s /usr/sbin/sendmail but now, after some update, apparently this doesn't work any more. what seems to have changed is: * "-m" is replaced by "-w" or "-W". * "-s" doesn't specify sendmail path, but is rather only a flag to suppress "reports sent by email". if i update the command into: > arpwatch -i enp7s0 -w caveman@domain.com then, it runs normally, but, it fails to send emails, with this error: > execl: sendmail: No such file or directory `whereis sendmail`: > sendmail: /usr/sbin/sendmail /usr/lib/sendmail /usr/lib64/sendmail /u= sr/share/man/man1/sendmail.1.bz2 questions: ---------- Q1: what happened that caused this syntax change? e.g. is it an update from upstream? or is it a totally new app written by other devs? or am i hallucinating (pretty sure it used to work tho)? Q2: is there any better tool to monitor arps and to email me when interesting things happen? thanks a lot for your time. rgrds, cm.