Re: okay, time to ask the wizards.
Quoth Devin Teske on Thursday, 28 October 2010:
> On Thu, 2010-10-28 at 09:31 -0700, Gary Kline wrote:
> > On Thu, Oct 28, 2010 at 08:18:06AM -0500, Robert Bonomi wrote:
> > >
> > > > From: Gary Kline
> > > > To: FreeBSD Mailing List
> > > > Cc:
> > > > Subject: okay, time to ask the wizards.
> > > >
> > > > I've got a very large file with paragraphs separated only by "\n".
> > > > How do I put a blank line _after_ each newline?
> > >
> > > have you tried something as simple as
> > >
> > >sed -e 's/\n/&&/' outfile
> > > -or-
> > >awk '{print; print "";}' infile
> > > --
> > >
> >
> >
> > There's another way, using awk. :-)
>
>
> awk '{print $0"\n"}'
>
> ^_^
>
Birdie -- but,
sed G
is an eagle.
--
Sterling (Chip) Camden| sterl...@camdensoftware.com | 2048D/3A978E4F
http://camdensoftware.com | http://chipstips.com| http://chipsquips.com
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Re: okay, time to ask the wizards.
On Thu, 2010-10-28 at 09:31 -0700, Gary Kline wrote:
> On Thu, Oct 28, 2010 at 08:18:06AM -0500, Robert Bonomi wrote:
> >
> > > From: Gary Kline
> > > To: FreeBSD Mailing List
> > > Cc:
> > > Subject: okay, time to ask the wizards.
> > >
> > > I've got a very large file with paragraphs separated only by "\n".
> > > How do I put a blank line _after_ each newline?
> >
> > have you tried something as simple as
> >
> >sed -e 's/\n/&&/' outfile
> > -or-
> >awk '{print; print "";}' infile
> > --
> >
>
>
> There's another way, using awk. :-)
awk '{print $0"\n"}'
^_^
> gary
>
>
> >
> > ___
> > freebsd-questions@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> > To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
--
Cheers,
Devin Teske
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Re: okay, time to ask the wizards.
On Thu, Oct 28, 2010 at 08:18:06AM -0500, Robert Bonomi wrote:
>
> > From: Gary Kline
> > To: FreeBSD Mailing List
> > Cc:
> > Subject: okay, time to ask the wizards.
> >
> > I've got a very large file with paragraphs separated only by "\n".
> > How do I put a blank line _after_ each newline?
>
> have you tried something as simple as
>
>sed -e 's/\n/&&/' outfile
> -or-
>awk '{print; print "";}' infile
> --
>
There's another way, using awk. :-)
gary
>
> ___
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--
Gary Kline kl...@thought.org http://www.thought.org Public Service Unix
The 7.90a release of Jottings: http://jottings.thought.org/index.php
http://journey.thought.org
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Re: okay, time to ask the wizards.
On Thu, Oct 28, 2010 at 03:18:02PM +1030, Wayne Sierke wrote: > On Wed, 2010-10-27 at 18:16 -0700, Liontaur wrote: > > On Wed, Oct 27, 2010 at 6:04 PM, Gary Kline wrote: > > > > > I've got a very large file with paragraphs separated only by "\n". > > > How do I put a blank line _after_ each newline? > > > > > > > > Perhaps using sed? i'm definitely no sed expert but the substitute command > > would work, just substitute one \n with two? > > > > Mark > > Not quite. When considering sed(1), recall that: > > Normally, sed cyclically copies a line of input, not including > its terminating newline character, into a pattern space, ... > (then) copies the pattern space to the standard output, > appending a newline, and deletes the pattern space. > > So there is no "\n" in the initial pattern space to be substituted. > Characters can however be inserted at the end of the line (before the > original \n) with: "s/$//" as Chad used in his perl > solution. Unfortunately FreeBSD sed's "substitute" doesn't recognise > "\n" as "newline" in a substitution, although it's possible to insert a > literal "newline" character through various shell-dependent techniques. > > In this particular case however, sed does offer the "pièce de > résistance": > > sed G > > > The operation is left as a learning exercise for the reader. > > > Wayne > Well, I hope this mouse and paste works across konsoles. I've had this stuff in my ~/.HowTo file for a couple years. I don't remember the % sed G bit, but it would've saved a lot of electrons. %%% sed howto's: FILE SPACING: # double space a file sed G # double space a file which already has blank lines in it. Output file # should contain no more than one blank line between lines of text. sed '/^$/d;G' # triple space a file sed 'G;G' Yup. Works. So there, gents, you've got it from "wherever I got it from." thanks for the insights from ``y'all|you-all|you'n's|everybody'' gary > -- Gary Kline kl...@thought.org http://www.thought.org Public Service Unix The 7.90a release of Jottings: http://jottings.thought.org/index.php http://journey.thought.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
On Thu, 2010-10-28 at 15:18 +1030, Wayne Sierke wrote: > > On Wed, Oct 27, 2010 at 6:04 PM, Gary Kline wrote: > > > > > I've got a very large file with paragraphs separated only by "\n". > > > How do I put a blank line _after_ each newline? > In this particular case however, sed does offer the "pièce de > résistance": > > sed G Mea culpa. Someone contacted me off-list querying the validity of my sed statement which highlighted that my solution description was overly terse. Of course what I was suggesting was: sed G sourcefile and practically used as something like: sed G sourcefile > newfile or: sed -i .orig -e G sourcefile e.g.: %cat > sourcefile Line one. Line two. Line three. %D %sed G sourcefile Line one. Line two. Line three. % Wayne ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
> From: Gary Kline
> To: FreeBSD Mailing List
> Cc:
> Subject: okay, time to ask the wizards.
>
> I've got a very large file with paragraphs separated only by "\n".
> How do I put a blank line _after_ each newline?
have you tried something as simple as
sed -e 's/\n/&&/' outfile
-or-
awk '{print; print "";}' infile
--
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Re: okay, time to ask the wizards..
Chad Perrin wrote: > Plus . . . I like pie. A bit out of season, aren't we? It's nowhere near 1 minute before 2 on March 14. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
On Wed, Oct 27, 2010 at 07:29:25PM -0600, Chad Perrin wrote: > On Wed, Oct 27, 2010 at 06:14:04PM -0700, Nerius Landys wrote: > > You mean replace each newline character with two newline characters? > > > > perl -p -i -e 's/\n/\n\n/g' yourfile.txt > Hm. Didn't think of perl; but yeah. > The g in that is unnecessary. I'd also be inclined to use $ in the > matching part of that regex than \n, and only require one newline > character in the substitution part as a result: > > perl -pie 's/$/\n/' filename.txt I think the '$' wins because there might be an embedded newline. The pdf2html utility uses them to match the page-size of the PDF. > > Plus . . . I like pie. Yup. -g > > -- > Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ] -- Gary Kline kl...@thought.org http://www.thought.org Public Service Unix The 7.90a release of Jottings: http://jottings.thought.org/index.php http://journey.thought.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
On Wed, Oct 27, 2010 at 07:10:55PM -0600, Chad Perrin wrote:
> On Wed, Oct 27, 2010 at 06:04:50PM -0700, Gary Kline wrote:
> > I've got a very large file with paragraphs separated only by "\n".
> > How do I put a blank line _after_ each newline?
>
> perl -e 'while (<>) { s/$/\n/; print; }'
>
> You could also open the file in vi or Vim and give it this command:
>
> :%s/$/^M/
>
> Note that you don't type in that ^M by using the ^ and M keys on the
> keyboard. Instead, you first type ctrl-v then press the Enter key.
>
Thanks, much I've been editing the entire day [[ well, before
I stopped to watch the ST DVD:-)]]. Then trying to remember how the
hell to get a newline into a vi :sub. There is a way using tr that
is among the tr man page examples. Not sure that will work.
I'll put your perl exaple with -pi.bak into my ~/bin directory.
That way, when my brain stalls I'll have it.
gary
PS: There are a few remaining regex tricks that I have to catch
before I run the file thru atom. For now: calling "T"--
> --
> Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]
--
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Re: okay, time to ask the wizards.
On Wed, 2010-10-27 at 18:16 -0700, Liontaur wrote: > On Wed, Oct 27, 2010 at 6:04 PM, Gary Kline wrote: > > > I've got a very large file with paragraphs separated only by "\n". > > How do I put a blank line _after_ each newline? > > > > > Perhaps using sed? i'm definitely no sed expert but the substitute command > would work, just substitute one \n with two? > > Mark Not quite. When considering sed(1), recall that: Normally, sed cyclically copies a line of input, not including its terminating newline character, into a pattern space, ... (then) copies the pattern space to the standard output, appending a newline, and deletes the pattern space. So there is no "\n" in the initial pattern space to be substituted. Characters can however be inserted at the end of the line (before the original \n) with: "s/$//" as Chad used in his perl solution. Unfortunately FreeBSD sed's "substitute" doesn't recognise "\n" as "newline" in a substitution, although it's possible to insert a literal "newline" character through various shell-dependent techniques. In this particular case however, sed does offer the "pièce de résistance": sed G The operation is left as a learning exercise for the reader. Wayne ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
On Wed, Oct 27, 2010 at 06:14:04PM -0700, Nerius Landys wrote: > You mean replace each newline character with two newline characters? > > perl -p -i -e 's/\n/\n\n/g' yourfile.txt The g in that is unnecessary. I'd also be inclined to use $ in the matching part of that regex than \n, and only require one newline character in the substitution part as a result: perl -pie 's/$/\n/' filename.txt Plus . . . I like pie. -- Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ] pgpGpP9Q2VWV4.pgp Description: PGP signature
Re: okay, time to ask the wizards.
On Wed, Oct 27, 2010 at 06:04:50PM -0700, Gary Kline wrote:
> I've got a very large file with paragraphs separated only by "\n".
> How do I put a blank line _after_ each newline?
perl -e 'while (<>) { s/$/\n/; print; }'
You could also open the file in vi or Vim and give it this command:
:%s/$/^M/
Note that you don't type in that ^M by using the ^ and M keys on the
keyboard. Instead, you first type ctrl-v then press the Enter key.
--
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]
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Re: okay, time to ask the wizards.
On Wed, Oct 27, 2010 at 6:04 PM, Gary Kline wrote: > I've got a very large file with paragraphs separated only by "\n". > How do I put a blank line _after_ each newline? > > Perhaps using sed? i'm definitely no sed expert but the substitute command would work, just substitute one \n with two? Mark ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: okay, time to ask the wizards.
You mean replace each newline character with two newline characters? perl -p -i -e 's/\n/\n\n/g' yourfile.txt Something like that? On Wed, Oct 27, 2010 at 6:04 PM, Gary Kline wrote: > I've got a very large file with paragraphs separated only by "\n". > How do I put a blank line _after_ each newline? > > > > -- > Gary Kline kl...@thought.org http://www.thought.org Public Service > Unix >The 7.90a release of Jottings: http://jottings.thought.org/index.php > http://journey.thought.org > > ___ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscr...@freebsd.org" > ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
okay, time to ask the wizards.
I've got a very large file with paragraphs separated only by "\n". How do I put a blank line _after_ each newline? -- Gary Kline kl...@thought.org http://www.thought.org Public Service Unix The 7.90a release of Jottings: http://jottings.thought.org/index.php http://journey.thought.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
