Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Sed/awk to delete single lines that aren't touching other lines
Top Forums Shell Programming and Scripting Sed/awk to delete single lines that aren't touching other lines Post 302583855 by ctsgnb on Wednesday 21st of December 2011 12:37:33 PM
Old 12-21-2011
You can also give a try to this much more simple one:

Code:
nawk 'NF>1' RS="" FS="\n" ORS="\n\n" yourfile

or

Code:
nawk 'BEGIN {RS="";FS="\n"}NF>1' ORS="\n\n" yourfile

Code:
$ cat f
one
two

three
four

five

six
seven

eight

nine
ten 
eleven
twelve

thirteen lone

fourteen lone

fifteen
sixteen
$ nawk 'NF>1' RS="" FS="\n" ORS="\n\n" f
one
two

three
four

six
seven

nine
ten 
eleven
twelve

fifteen
sixteen

$

Last edited by ctsgnb; 12-22-2011 at 07:09 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed help - delete last 2 lines.

I have been reading through the sed one liners, trying to understand what is happening. # delete the last 2 lines of a file sed 'N;$!P;$!D;$d' The above will delete the last 2 line of a file. I tried analyzing what happens. And I got lost :( This is what I understood so far from the... (2 Replies)
Discussion started by: vino
2 Replies

2. Shell Programming and Scripting

sed problem - delete all lines until a match on 2 lines

First of all, I know this can be more eassily done with perl or other scripting languages but, that's not the issue. I need this in sed. (or wander if it's possible ) I got a file (trace file to recreate the control file from oracle for the dba boys) which contains some lines another line... (11 Replies)
Discussion started by: plelie2
11 Replies

3. Shell Programming and Scripting

Sed to delete lines that with the following

Hi, I'm very new to Sed and I have a very large file that contains data in the following way (*064) 1 4 10 (*064) simulation time = 0.12000E-05 (*064) 1 2 10 (*064) 1 3 10Essentially what I want to do it delete every line that starts with '(*064) 1'I tried the following, ... (2 Replies)
Discussion started by: lost.identity
2 Replies

4. Shell Programming and Scripting

How to delete lines using sed?

<VirtualHost 192.168.1.158:80> DocumentRoot /home/ten ServerName ten.com </VirtualHost> <VirtualHost 192.168.1.158:80> DocumentRoot /home/sachin ServerName sachin.com </VirtualHost> <VirtualHost 192.168.1.158:80> DocumentRoot /home/yuvraj ServerName yuvraj.com... (5 Replies)
Discussion started by: tkmmelvin
5 Replies

5. Shell Programming and Scripting

sed/awk : how to delete lines based on IP pattern ?

Hi, I would like to delete lines in /etc/hosts on few workstations, basically I want to delete all the lines for a list of machines like this : for HOST in $(cat stations.lst |uniq) do # echo -n "$HOST" if ping -c 1 $HOST > /dev/null 2>&1 then HOSTNAME_val=`rsh $HOST "sed... (3 Replies)
Discussion started by: albator1932
3 Replies

6. Shell Programming and Scripting

sed or awk delete character in the lines before and after the matching line

Sample file: This is line one, this is another line, this is the PRIMARY INDEX line l ; This is another line The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line... (5 Replies)
Discussion started by: KC_Rules
5 Replies

7. Shell Programming and Scripting

Delete Lines : after pattern1 and between pattern2 and pattern3 using awk/sed/perl

Hi I need to delete lines from a file which are after pattern1 and between pattern 2 and patter3, as below: aaaaaaaa bbbbbbbb pattern1 cdededed ddededed pattern2 fefefefe <-----Delete this line efefefef <-----Delete this line pattern3 adsffdsd huaserew Please can you suggest... (6 Replies)
Discussion started by: vk2012
6 Replies

8. Shell Programming and Scripting

Summing over specific lines and replacing the lines with the sum using sed, awk

Hi friends, This is sed & awk type question. I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example ###start of input text file #### abc def ghi 1 2 3 4 kjld random... (3 Replies)
Discussion started by: kaaliakahn
3 Replies

9. Shell Programming and Scripting

sed or awk: delete n lines following a formfeed

Hi Members, This is my first post in this forum. I want to do is match form feed lines one by one in a file and delete the next n lines (ex-3 lines) with the form feed character Eg - Files looks like Data 1 Data 2 Data 3 FF Hdr1 Hdr2 Hdr3 Data4 Data5 FF Hdr1 Hdr2 Hdr3 (9 Replies)
Discussion started by: yohan
9 Replies

10. UNIX for Beginners Questions & Answers

Sed/awk to delete a regex between range of lines

Hi Guys I am looking for a solution to one problem to remove parentheses in a range of lines. Input file module bist_logic_inst(a, ab , dhd, dhdh , djdj, hdh, djjd, jdj, dhd, dhp, dk ); input a; input ab; input dhd; input djdj; input dhd; output hdh; output djjd; output jdj;... (5 Replies)
Discussion started by: kshitij
5 Replies

LEARN ABOUT OSX

locale::codes::langext

Locale::Codes::LangExt(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangExt(3pm)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.2							    2012-10-11					       Locale::Codes::LangExt(3pm)
All times are GMT -4. The time now is 09:23 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy