Paul Eggert <eggert@HIDDEN>
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Date: Fri, 29 Mar 2019 23:01:48 -0400
From: "Paul Jackson" <pj@HIDDEN>
To: bug-grep@HIDDEN
Subject: =?UTF-8?Q?Re:_bug#35043:_Is_there_a_way_to_show_file_name_once_just_befo?=
=?UTF-8?Q?re_all_the=09matches_in_the_file=3F?=
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--fe1641a6dbed4bfbbb343f0f8ed60b71
Content-Type: text/plain
The following awk command will do this (so long as filenames don't have ':' colon chars):
grep IP /etc/protocols /etc/services |
awk -F: '
$1 != fname { print $1 ":"; fname = $1; }
{ sub("^[^:]*:", ""); print; }
'
--
Paul Jackson
pj@HIDDEN
--fe1641a6dbed4bfbbb343f0f8ed60b71
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;"><br></div><div style=3D"font-family:Arial;">The following =
awk command will do this (so long as filenames don't have ':' colon char=
s):<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"f=
ont-family:Arial;"><span style=3D"font-family: menlo, consolas, monospac=
e, sans-serif;" class=3D"font">grep IP /etc/protocols /etc/services |</s=
pan><span style=3D"font-family: menlo, consolas, monospace, sans-serif;"=
class=3D"font"><br></span></div><div style=3D"font-family:Arial;"><span=
style=3D"font-family: menlo, consolas, monospace, sans-serif;" class=3D=
"font"> awk -F: '</span><span style=3D"font-family: me=
nlo, consolas, monospace, sans-serif;" class=3D"font"><br></span></div><=
div style=3D"font-family:Arial;"><span style=3D"font-family: menlo, cons=
olas, monospace, sans-serif;" class=3D"font"> &nb=
sp; $1 !=3D fname { print $1 ":"; fname =3D $1; }</span><spa=
n style=3D"font-family: menlo, consolas, monospace, sans-serif;" class=3D=
"font"><br></span></div><div style=3D"font-family:Arial;"><span style=3D=
"font-family: menlo, consolas, monospace, sans-serif;" class=3D"font">&n=
bsp; { sub("^[^:]*:", ""); print; }<=
/span><span style=3D"font-family: menlo, consolas, monospace, sans-serif=
;" class=3D"font"><br></span></div><div style=3D"font-family:Arial;"><sp=
an style=3D"font-family: menlo, consolas, monospace, sans-serif;" class=3D=
"font"> '</span><span style=3D"font-family: menlo, con=
solas, monospace, sans-serif;" class=3D"font"><br></span></div><div styl=
e=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">--&=
nbsp;<br></div><div style=3D"font-family:Arial;">  =
; Paul=
Jackson<br></div><div style=3D"font-family:Arial;"> &n=
bsp; p=
j@HIDDEN<br></div></body></html>
--fe1641a6dbed4bfbbb343f0f8ed60b71--
bug-grep@HIDDEN:bug#35043; Package grep.
Full text available.Received: (at submit) by debbugs.gnu.org; 29 Mar 2019 20:47:55 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 29 16:47:55 2019 Received: from localhost ([127.0.0.1]:36052 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1h9yPq-0002YC-Pi for submit <at> debbugs.gnu.org; Fri, 29 Mar 2019 16:47:54 -0400 Received: from eggs.gnu.org ([209.51.188.92]:33551) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <pengyu.ut@HIDDEN>) id 1h9yPo-0002Xz-QG for submit <at> debbugs.gnu.org; Fri, 29 Mar 2019 16:47:53 -0400 Received: from lists.gnu.org ([209.51.188.17]:49729) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <pengyu.ut@HIDDEN>) id 1h9yPj-0003FF-Je for submit <at> debbugs.gnu.org; Fri, 29 Mar 2019 16:47:47 -0400 Received: from eggs.gnu.org ([209.51.188.92]:47928) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <pengyu.ut@HIDDEN>) id 1h9yPi-0003pI-Nd for bug-grep@HIDDEN; Fri, 29 Mar 2019 16:47:47 -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,FREEMAIL_FROM autolearn=disabled version=3.3.2 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <pengyu.ut@HIDDEN>) id 1h9yPg-0003EH-Pj for bug-grep@HIDDEN; Fri, 29 Mar 2019 16:47:46 -0400 Received: from mail-it1-x12b.google.com ([2607:f8b0:4864:20::12b]:54911) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from <pengyu.ut@HIDDEN>) id 1h9yPg-0003D9-IG for bug-grep@HIDDEN; Fri, 29 Mar 2019 16:47:44 -0400 Received: by mail-it1-x12b.google.com with SMTP id w18so5907574itj.4 for <bug-grep@HIDDEN>; Fri, 29 Mar 2019 13:47:43 -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=cp+BiLX/3O7v9O/qzPsFIN3LoULM4/EypSbck0n6zeY=; b=G4QuQgAYgx6tEVPDdB2gOCG+F302nUuUp+MM6toaBzN77QcgxyxREFClXaSllSUvbj 3pjERBOivav2F/OBBgh5M/tUukjWftzkXxNuU7VzL8k/chI7YHc6Yk3T42NWn1pofC3a /+faLwTCFTm3NCJQYVc8tJKRYVIcyOUgZudYQXBUCWDvM2b1aGEijX4eXxKkX0UOejrz UJsOVG+BP6E0qxqXWsUx0/89PVguYuJy2AoGbUsmtCEj9AmrBjrAsu6dX9HSMX58RQC1 4nerg9j3uUZBCI2Vf2nLAbgTJwpQBb4DXoNTcIXsY4xPWmwWRQnLJIG/ycL/ONAeZUCR Q2zw== 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=cp+BiLX/3O7v9O/qzPsFIN3LoULM4/EypSbck0n6zeY=; b=No65TZ7akrgYTdVIAQBKD+oILa7p4CHxTZ8YbEpB7EMvl714FsAU8vKZv2SmY0tkmy 1l3F7Q7v/3U9aglWBihVVWojSzCN4a9pLVGJJvJ0sjGT80n+4XOj7bb7ugsHoVE+ItFE nfQNe2DVL0eHqMmMP9lL2FeJ5BbZfhxQUvgcbQYcAgQtJj1Zeh58AWqjpWNNQis/fnC4 P9/O/sUC/ZVsDRH3DNN9LxFicOMnTXr7osLQCJg5lWRL/Dqo2jEg0HnCPktJ+1mzG00m f9jTBipLP8Y8s05McNBKZ7XEH+nwytMGziSizM1u56FyA1W+LvhUXwD1ZCpe7t2yf9Xb 3TRQ== X-Gm-Message-State: APjAAAXexxUlh5VVdoTvfJj7jdd05Ya2pWDGSd1sanVkLdfmMl/64t9D ZmD4C6ton8dJ+Yidc1NfGZlfMNPq9tIp0JjwO7dpZw== X-Google-Smtp-Source: APXvYqy9yi+vfxMKp2PPcUCWhqRsneEq8tLCIVx16rWXJxVnWexkR5dDG/r1nSvcpt7UZ1fk1hzTASG0dbeEhs8WO/8= X-Received: by 2002:a24:57c1:: with SMTP id u184mr6209313ita.38.1553892462755; Fri, 29 Mar 2019 13:47:42 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a5e:9707:0:0:0:0:0 with HTTP; Fri, 29 Mar 2019 13:47:41 -0700 (PDT) From: Peng Yu <pengyu.ut@HIDDEN> Date: Fri, 29 Mar 2019 15:47:41 -0500 Message-ID: <CABrM6wmR1PHTS1AAndzu1MBg6wv7985jythAbuBURgky-92opQ@HIDDEN> Subject: Is there a way to show file name once just before all the matches in the file? To: bug-grep@HIDDEN Content-Type: text/plain; charset="UTF-8" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::12b X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Spam-Score: 1.0 (+) 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: -0.0 (/) Hi, By default, filenames are shown at the same lines of the matches (when there are multiple files). But I'd like a filename only shown once before all the matches in the given file. Is there an option to do so with grep? Thanks. -- Regards, Peng
Peng Yu <pengyu.ut@HIDDEN>:bug-grep@HIDDEN.
Full text available.bug-grep@HIDDEN:bug#35043; Package grep.
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