tkevans@oss670.UUCP (Tim Evans) (03/15/91)
I would like to be able to insert blank lines at regular intervals
in a structured file. Specifically, I want to place a blank line after
every third line in my input file. Every third line in the input file
begins with a specific character string.
Here is an example input file:
Name: data ...
Addr: data ...
Phone: data ...
Name: data ...
Addr: data ...
Phone: data ...
What I want as output is:
Name: data ...
Addr: data ...
Phone: data ...
Name: data ...
Addr: data ...
Phone: data ...
If you reply via E-Mail, please use the address *BELOW*.
Thanks.
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PHONE (301) 965-3286jik@athena.mit.edu (Jonathan I. Kamens) (03/16/91)
In article <807@oss670.UUCP>, tkevans@oss670.UUCP (Tim Evans) writes: |> I would like to be able to insert blank lines at regular intervals |> in a structured file. Specifically, I want to place a blank line after |> every third line in my input file. Every third line in the input file |> begins with a specific character string. awk '{print} NR % 3 == 0 {print ""}' -- Jonathan Kamens USnail: MIT Project Athena 11 Ashford Terrace jik@Athena.MIT.EDU Allston, MA 02134 Office: 617-253-8085 Home: 617-782-0710
tchrist@convex.COM (Tom Christiansen) (03/16/91)
From the keyboard of tkevans@oss670.UUCP (Tim Evans):
:I would like to be able to insert blank lines at regular intervals
:in a structured file. Specifically, I want to place a blank line after
:every third line in my input file. Every third line in the input file
:begins with a specific character string.
I hate doing multi-line things in sed: it's such a pain.
If you cna really do this just by putting an extra newline
after each third line rather than keying off /^Name:/, just
use one of these:
awk '{ print; if (!(NR % 3)) print "\n" }'
perl -pe 's/$/\n/ unless $. % 3'
perl -pe '$. % 3 || s/$/\n/'
--tomed@lvw6.lvw.loral.com (Ed Allen) (03/16/91)
Now for the 'sed' solution....
sed -n -e '{N;N;p;a\
}' filename
Should work from 'sh', 'csh' is more particular about multi-line
arguments.
--
Never trust a man who wears white shoes. | Ed Allen
Vote Libertarian... Scare the Hell out of 'em. | Loral Command & Contr. Sys.bhoughto@hopi.intel.com (Blair P. Houghton) (03/16/91)
In article <ED.91Mar15201957@lvw6.lvw.loral.com> ed@lvw6.lvw.loral.com (Ed Allen) writes: >Now for the 'sed' solution.... >sed -n -e '{N;N;p;a\ > >}' filename >Should work from 'sh', 'csh' is more particular about multi-line >arguments. Csh(1) version: sed -n '{N;N;p;a\\ \ }' filename --Blair "Picky, picky."
janne@enea.se (Jan Carlsson) (03/17/91)
In article <1991Mar15.190607.5061@convex.com> tchrist@convex.COM (Tom Christiansen) writes: >From the keyboard of tkevans@oss670.UUCP (Tim Evans): >:I would like to be able to insert blank lines at regular intervals >:in a structured file. Specifically, I want to place a blank line after >:every third line in my input file. Every third line in the input file >:begins with a specific character string. > >I hate doing multi-line things in sed: it's such a pain. > >If you cna really do this just by putting an extra newline >after each third line rather than keying off /^Name:/, just >use one of these: > > awk '{ print; if (!(NR % 3)) print "\n" }' ^^^^^ Make that "printf" instead since "print" always appends a newline (ORS actually). -- Jan Carlsson, Enea Data AB, Box 232, Nytorpsvaegen 5, S-183 23 Taeby, Sweden Phone: +46 8 792 25 00 ! e-mail: janne@enea.se Fax: +46 8 768 43 88 !
darcy@druid.uucp (D'Arcy J.M. Cain) (03/18/91)
In article <1991Mar15.190607.5061@convex.com> Tom Christiansen writes: >From the keyboard of tkevans@oss670.UUCP (Tim Evans): >:I would like to be able to insert blank lines at regular intervals > awk '{ print; if (!(NR % 3)) print "\n" }' Nope. Either leave out the newline in the print statement or use printf instead of print. The way you have it you get 2 lines instead of one. -- D'Arcy J.M. Cain (darcy@druid) | D'Arcy Cain Consulting | There's no government Toronto, Ontario, Canada | like no government! +1 416 424 2871 |
nt@otter.hpl.hp.com (Nicolas Tripon) (03/19/91)
sed 's/^\(Phone:.*\)$/\1\ /' file (the first line ends with back slash followed by line feed).
nt@otter.hpl.hp.com (Nicolas Tripon) (03/20/91)
sed '/Phone:/s/$/\ /' file
rbj@uunet.UU.NET (Root Boy Jim) (03/28/91)
>In article <ED.91Mar15201957@lvw6.lvw.loral.com> ed@lvw6.lvw.loral.com (Ed Allen) writes: >>Now for the 'sed' solution.... >>sed -n -e '{N;N;p;a\ >> >>}' filename Most of it anyway. Works if the number of lines is a multiple of three. Extra line or two gets eaten. Anyway, here's a single line solution without the same bug: sed -n -e '$p;N;$p;N;h;s/.*//;H;x;p' I think TC is right about avoiding sed in cases like this. -- [rbj@uunet 1] stty sane unknown mode: sane