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Old 11-20-2006, 03:29 AM   #1
Fond_of_Opensource
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Exclamation removing new line character using sed


How to remove new line character using sed?

cat $myfile
Using my computer, you can prevent activities related to this info by using fun stuff of this utility with the

signature.

--------------------


I want to remove newline character and insert a single whitespace so that

cat $myfile
Using my computer, you can prevent activities related to this info by using fun stuff of this utility with the signature.
-------------------------------------------------------------

sed 's/\n/ /g' myfile
-----is not working

How to do this using sed?

pls help...

Last edited by Fond_of_Opensource; 11-20-2006 at 03:44 AM.
 
Old 11-20-2006, 04:57 AM   #2
bathory
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Code:
sed '/^$/d' myfile
should work

Regards
 
Old 11-20-2006, 05:15 AM   #3
matthewg42
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Quote:
Originally Posted by bathory
Code:
sed '/^$/d' myfile
should work

Regards
I believe the O.P. wants to slurp all lines up one the first one, but this just removes blank lines. You can easily do it with perl. sed can probably do it too, but there's nothing wrong with a little variety eh?
Code:
perl -ne 'chomp; print "$_ ";' myfile
This might cause you to wind up with some extra whitespace if you have blank lines or spaces at the start or end of lines. This will solve that problem:
Code:
perl -ne 'chomp; s/(^\s+|\s+$)//g; print "$_ " if ( $_ ne "" );' doc
 
Old 11-21-2006, 02:57 AM   #4
Fond_of_Opensource
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Thanks matthewg42,

It solved my problem....
 
Old 03-26-2010, 02:19 PM   #5
liuxy
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Wink More Perl

Quote:
Originally Posted by matthewg42 View Post
I believe the O.P. wants to slurp all lines up one the first one, but this just removes blank lines. You can easily do it with perl. sed can probably do it too, but there's nothing wrong with a little variety eh?
Code:
perl -ne 'chomp; print "$_ ";' myfile
This might cause you to wind up with some extra whitespace if you have blank lines or spaces at the start or end of lines. This will solve that problem:
Code:
perl -ne 'chomp; s/(^\s+|\s+$)//g; print "$_ " if ( $_ ne "" );' doc
Realizing this a old thread but could be useful for someone to google the same question

In Perl you can do:
perl -pi.bk -e 's/^\s+$//' myfile

For brave souls you can skip the .bk part, but don't say I didn't warn you ;-)
 
  


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