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Full Discussion: deleting the lines at the end of the file.
Top Forums Shell Programming and Scripting deleting the lines at the end of the file. Post 302452149 by shashi792 on Thursday 9th of September 2010 11:28:10 AM
Old 09-09-2010
Hammer & Screwdriver deleting the lines at the end of the file.
I have a text file with two coulmn
first column is just used in to show the line number, these line number are not there in the real file.

I want to delete the line 16(in this file) here, even tough there is no data inside it . this empty line is causing me a problem by throwing me garbage value when i input this stream in my c++ program.

Code:
1   0              2.14014e-07
2   13.214      1.00771e-06
3   13.947      3.76252e-05
4   13.958      5.2692e-06
5   13.966     4.87701e-06
6   14.065     3.81149e-06
7   14.076     3.65411e-06
8   14.29       9.82566e-07
9   17.899     6.10872e-07
10  19.757     7.14666e-07
11  200.947    1.78718e-07
12  226.555    1.34066e-07
13  231.43     1.35589e-07
14  231.8       9.41089e-08
15  266.201    1.91486e-07
16

i tried using
Code:
1:  sed -i '/^$/d' file > newfile
2:  sed '/./!d'     file > newfile
3:  sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' file

all these three commands just delete blank line after line 16. but i want my output in the new file to be just

Code:
1   0              2.14014e-07
2   13.214      1.00771e-06
3   13.947      3.76252e-05
4   13.958      5.2692e-06
5   13.966     4.87701e-06
6   14.065     3.81149e-06
7   14.076     3.65411e-06
8   14.29       9.82566e-07
9   17.899     6.10872e-07
10  19.757     7.14666e-07
11  200.947    1.78718e-07
12  226.555    1.34066e-07
13  231.43     1.35589e-07
14  231.8       9.41089e-08
15  266.201    1.91486e-07

and not as the first one

how should i solve this.
 

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LEARN ABOUT OSX

locale::codes::langfam

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

NAME

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

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. 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 = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_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.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

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::LangFam(3pm)
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