GNU logs - #35043, boring messages

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Subject: bug#35043: Is there a way to show file name once just before all the matches in the file?
Resent-From: Peng Yu <pengyu.ut@HIDDEN>
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From: Peng Yu <pengyu.ut@HIDDEN>
Date: Fri, 29 Mar 2019 15:47:41 -0500
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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

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Subject: bug#35043: Acknowledgement (Is there a way to show file name once
 just before all the matches in the file?)
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Date: Fri, 29 Mar 2019 20:48:02 +0000

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Subject: bug#35043: Is there a way to show file name once just before all the	matches in the file?
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Date: Fri, 29 Mar 2019 23:01:48 -0400
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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">&nbsp;&nbsp;&nbsp; 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">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; $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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; { 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">&nbsp;&nbsp;&nbsp; '</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;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Paul=
 Jackson<br></div><div style=3D"font-family:Arial;">&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; p=
j@HIDDEN<br></div></body></html>
--fe1641a6dbed4bfbbb343f0f8ed60b71--

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Subject: 35043 is wishlist
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severity 35043 wishlist

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