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Top Forums Shell Programming and Scripting Remove every line with specific string, and also the one above and below it Post 302902682 by phpchick on Wednesday 21st of May 2014 05:14:48 PM
Old 05-21-2014
Remove every line with specific string, and also the one above and below it

I would like to identify every line with a specific string, in this case: "Mamma".
I would like to remove that line, and also the line above it and below it. So the below

Code:
Where are all amazing Flats
Look At The Great Big White
Hey There Hot Mamma
You Are So hot Baby
I wish You were Mine
Hee How Yee Haw
Hey There Hot Mamma
Wait A minute
Hee Haw Yee Haw
Hey There Hot Mamma
A song Is Here
Make me a List

Becomes

Code:
Where are all amazing Flats
I wish You were Mine
Make me a List


I was wondering if anyone could help me out? I've googled but it is a little complex for Google

---------- Post updated at 05:14 PM ---------- Previous update was at 05:07 PM ----------

I think this might work

sed -n '/Mamma/{N;s/.*//;x;d;};x;p;${x;p;}' file | sed '/^$/d'

Last edited by jim mcnamara; 05-21-2014 at 06:10 PM.. Reason: code tags
 

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

NAME
Locale::Codes::LangVar - standard codes for language variation identification SYNOPSIS
use Locale::Codes::LangVar; $lvar = code2langvar('acm'); # $lvar gets 'Mesopotamian Arabic' $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm' @codes = all_langvar_codes(); @names = all_langvar_names(); DESCRIPTION
The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, 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 variations. 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: $lvar = code2langvar('en','alpha-2'); $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2); The codesets currently supported are: alpha This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian. This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA". This is the default code set. ROUTINES
code2langvar ( CODE [,CODESET] ) langvar2code ( NAME [,CODESET] ) langvar_code2code ( CODE ,CODESET ,CODESET2 ) all_langvar_codes ( [CODESET] ) all_langvar_names ( [CODESET] ) Locale::Codes::LangVar::rename_langvar ( CODE ,NEW_NAME [,CODESET] ) Locale::Codes::LangVar::add_langvar ( CODE ,NAME [,CODESET] ) Locale::Codes::LangVar::delete_langvar ( CODE [,CODESET] ) Locale::Codes::LangVar::add_langvar_alias ( NAME ,NEW_NAME ) Locale::Codes::LangVar::delete_langvar_alias ( NAME ) Locale::Codes::LangVar::rename_langvar_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangVar::add_langvar_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangVar::delete_langvar_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) 2011-2013 Sullivan Beck This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2014-01-06 Locale::Codes::LangVar(3pm)
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