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Full Discussion: extracting line numbers from a file and redirecting them to another file
Top Forums Shell Programming and Scripting extracting line numbers from a file and redirecting them to another file Post 302549132 by arindamlive on Sunday 21st of August 2011 10:13:17 PM
Old 08-21-2011
extracting line numbers from a file and redirecting them to another file
i have applied the following command on a file named unix.txt that contains the string "linux from the text"
Code:
grep -n -i -w "linux from the text" unix.txt

and the result is
Code:
5:Today's Linux from the text systems are split into various branches, developed over time by AT&T as well as various commercial vendors and non-profit organizations.
11:The second edition of Linux from the text was released on December 6th, 1972.
106:Linux From THE text is a good book actually

Now i want to copy the line numbers namely 5, 11, 106 into a new file.. If i use the cut command, i wud have to know beforehand the range of columns which is not possible as the line numbers maybe 1 digit, 2 digit, 3 digit or even more perhaps...

Pls advice
Last edited by Franklin52; 08-22-2011 at 04:30 AM.. Reason: Please use code tags for code and data samples, thank you
 

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LEARN ABOUT DEBIAN

graphics::primitive::insets

Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME

       Graphics::Primitive::Insets - Space between things

DESCRIPTION

       Graphics::Primitive::Insets represents the amount of space that surrounds something.  This object can be used to represent either padding
       or margins (in the CSS sense, one being inside the bounding box, the other being outside)

SYNOPSIS

	 use Graphics::Primitive::Insets;

	 my $insets = Graphics::Primitive::Insets->new({
	   top	   => 5,
	   bottom  => 5,
	   left    => 5,
	   right   => 5
	 });

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Insets.

   Instance Methods
       as_array
	   Return these insets as an array in the form of top, right, bottom and left.

       bottom
	   Set/Get the inset from the bottom.

       equal_to
	   Determine if these Insets are equal to another.

       left
	   Set/Get the inset from the left.

       right
	   Set/Get the inset from the right.

       top Set/Get the inset from the top.

       zero
	   Sets all the insets (top, left, bottom, right) to 0.

AUTHOR

       Cory Watson, "<gphat@cpan.org>"

SEE ALSO

       perl(1)

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

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

perl v5.12.3							    2010-08-21					  Graphics::Primitive::Insets(3pm)
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