 | | From: | mfyahya at gmail.com | | Subject: | Removing newlines between patterns | | Date: | 23 Jan 2005 07:32:35 -0800 |
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 | I have a large file with text like this
pattern line1
line2
line3
pattern line4
line6
pattern line7
pattern line8
line9
line10
line11
....
I want
pattern line1 line2 line3
pattern line4 line6
pattern line7 line8
pattern line9 line10 line 11
thanks for any help
Yahya
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| | From: | Stephane CHAZELAS | | Subject: | Re: Removing newlines between patterns | | Date: | Sun, 23 Jan 2005 15:46:35 +0000 |
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| 2005-01-23, 07:32(-08), mfyahya@gmail.com:
> I have a large file with text like this
> pattern line1
> line2
> line3
> pattern line4
> line6
> pattern line7
> pattern line8
> line9
> line10
> line11
> ...
>
> I want
> pattern line1 line2 line3
> pattern line4 line6
> pattern line7 line8
> pattern line9 line10 line 11
[...]
With vim:
:%s/\n\(pattern\)\@!/ /
With awk:
awk '
NR > 1 {
if (/^pattern/) $0 = "\n" $0
else $0 = " " $0
}
{ printf "%s", $0 }
END {print ""}' < file.txt
--
Stéphane
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| | From: | James Hu | | Subject: | Re: Removing newlines between patterns | | Date: | Mon, 24 Jan 2005 02:18:05 -0600 |
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| On 2005-01-23, mfyahya@gmail.com wrote:
> I have a large file with text like this
> pattern line1
> line2
> line3
> pattern line4
> line6
> pattern line7
> pattern line8
> line9
> line10
> line11
> ...
>
> I want
> pattern line1 line2 line3
> pattern line4 line6
> pattern line7 line8
> pattern line9 line10 line 11
>
> thanks for any help
> Yahya
Stephane gave you a vim solution that worked for you. This is just
for those that may be looking for a plain vi solution.
First, make sure the global command will work for the last occurrence
of pattern by appending pattern to the end of the file:
Gopattern^[
Then, do the following global command, which joins all the lines that
begin with pattern up to the next line that begins with pattern:
:g/^pattern/,/^pattern/-1j
Then, remove the appended line.
Gdd
-- James
--
http://www.ungerhu.com/jxh/vi.html
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| | From: | mfyahya at gmail.com | | Subject: | Re: Removing newlines between patterns | | Date: | 23 Jan 2005 08:32:07 -0800 |
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| Thanks it worked. I used Vim.
What does \@! do in :%s/\n\(pattern\)\@!/ / ?
Coudn't figure that out :)
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| | From: | Kenny McCormack | | Subject: | Re: Removing newlines between patterns | | Date: | Sun, 23 Jan 2005 16:45:06 GMT |
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| In article <1106497927.085051.327360@f14g2000cwb.googlegroups.com>,
wrote:
>Thanks it worked. I used Vim.
>What does \@! do in :%s/\n\(pattern\)\@!/ / ?
>Coudn't figure that out :)
>
Seems to be like the "look ahead" features of Perl or Lex.
(Try "help @!")
Here's another VIM solution:
1G!Ggawk 'ORS=RT=="\n"?" ":RT' 'RS=\n(pattern)?'
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