From owner-freebsd-questions@freebsd.org Fri Nov 1 04:25:35 2019 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id ACE031A3A73 for ; Fri, 1 Nov 2019 04:25:35 +0000 (UTC) (envelope-from mafsys1234@gmail.com) Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4748Hz1D4bz4Grf for ; Fri, 1 Nov 2019 04:25:34 +0000 (UTC) (envelope-from mafsys1234@gmail.com) Received: by mail-pf1-x444.google.com with SMTP id q26so6118216pfn.11 for ; Thu, 31 Oct 2019 21:25:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=JkCmjVoKiqg5WtvP2RZ1Ul+jPWUN/o1OKa0o13zv9RI=; b=rKNnIyzDI6+59Eo1175qZ8gMjsCu/o6uJclCQjlVcOS471DClkQc8SSBQQ0Ly/79KB b2x6XnguDvocaJitb4iqYYWOfaLdvptPJqldlN8ZNaB9Tuv7QjU/S8ScfkTKfU7vYEL3 lbttJ9EBqFpiYC0w9qwHo4NVCs1pHPbI+FTC1x0/4xrw/bK30Z7YM+xASgR2CIOyTEcV Om/3CVEQCkoYAT766i1mdTk7DtE/zmIQpusGE+sSIdQcXm4yR8g7/UzAS994pjqs6Z54 6Fg5hgTTQhfnTrslHuCEds3Ku+xKpO7gM6/jdeQ+PgC0GumxqgpLEtr1lZdNz7PXNb0K uvYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=JkCmjVoKiqg5WtvP2RZ1Ul+jPWUN/o1OKa0o13zv9RI=; b=jpi1FbXy/UZRZBR1+Pvkk90sEItDvI8jkEgpUTrTV3synmLWPRR+MEVj102BnLaXBm jS5+RrgpYpL1neu9d2CRQfu2/Amfp8aqJVlkHyFIpp9POaUQPlClvo74kx38iQN+dkgG DwQgKqq5znhS/9X8Iu/zYIRKmkM+YCvoZchJAeYy+T2jIIiE7LGf2YDrjC1y4pWLwSVW pkg/DsuT6VWDO0NY9hAwoeGUYXhLeQb5CAtWXMRD+LBLJZ80/eP8wknadBSAOBqz8zbB tUZJiOFcidsYkqLVF50f4dgR3tK/Vv6sh2EyWP47TuHF8e+iMGnQPwAnSDxoPW6QbXUw ml7w== X-Gm-Message-State: APjAAAVxt4M6XQkLE52FwjL8TDvKJdX711WZdJtY69BhRo82fouchRxR zpd4UkxrtFK+X93p5uUgDuE3t4A3 X-Google-Smtp-Source: APXvYqyKcyCFAMVlKlnO8noTVC8I8GrompSIuGOg5Jz/pBKYXDmGY4zRtBz1tTOU6alrX2cwyqDWDg== X-Received: by 2002:a63:d0f:: with SMTP id c15mr11014010pgl.313.1572582332325; Thu, 31 Oct 2019 21:25:32 -0700 (PDT) Received: from [192.168.1.10] (C-59-101-231-119.bur.connect.net.au. [59.101.231.119]) by smtp.gmail.com with ESMTPSA id e8sm5391467pga.17.2019.10.31.21.25.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 31 Oct 2019 21:25:31 -0700 (PDT) Subject: Re: grep for ascii nul To: thor , freebsd-questions@freebsd.org References: <20191101024817.GA60134@admin.sibptus.ru> <2c08387c-425b-060d-4f9b-3443a3f6a18f@irk.ru> From: MJ Message-ID: <8af5cac6-827e-9420-fe14-204bd4490976@gmail.com> Date: Fri, 1 Nov 2019 15:24:26 +1100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <2c08387c-425b-060d-4f9b-3443a3f6a18f@irk.ru> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-AU X-Rspamd-Queue-Id: 4748Hz1D4bz4Grf X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=rKNnIyzD; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of mafsys1234@gmail.com designates 2607:f8b0:4864:20::444 as permitted sender) smtp.mailfrom=mafsys1234@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RECEIVED_SPAMHAUS_PBL(0.00)[119.231.101.59.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.10]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[4.4.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(0.00)[ip: (-0.48), ipnet: 2607:f8b0::/32(-2.39), asn: 15169(-2.04), country: US(-0.05)]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Nov 2019 04:25:35 -0000 On 1/11/2019 2:07 pm, thor wrote: > There is NO such thing as filenames containing 0x00 inside the filename. UNIX filenames are strings in C meaning and may contain any 8-bit values except "/" which delimits the subdirectory names and 0x00 which marks the end of filename string. > > At least it was so when I first met Unix, and I hope Bill Gates never influenced Unix since this time. Nope you're right, no \0 allowed in filenames. None, nada, zilch. > On 11/01/19 10:48, Victor Sudakov wrote: >> Dear Colleagues, >> >> How can I print the names of files containing ascii nul (\x0)? The >> FreeBSD "grep -l" does not seem to be able to do it. >> >> NB I don't need to delete the nul character with sed or tr, just need to >> find files containing it. >> Victor, If you do find a file with it in, I suggest you bottle it and place it alongside your unicorn. MarkJ