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Full Discussion: Explanation Needed
Top Forums Shell Programming and Scripting Explanation Needed Post 302478441 by Franklin52 on Wednesday 8th of December 2010 02:48:31 AM
Old 12-08-2010
Quote:
Originally Posted by raghulshekar
Hi all,

I'm very new to UNIX. I have got a coding, where i dont understand the below part. Could someone please explain it in detail?
Code:
awk 'NR > 1; NR == 1 { S = $0 } END { print S }' $textfile.bak > $textfile

could someone explain what
Code:
awk 'NR > 1; NR == 1 { S = $0 } END { print S }'

does in detail? it would be very helpful..

thanks in advance
Rahul
Explanation:
Code:
NR > 1 condition without an action: print the line if line number > 1
NR == 1 { S = $0 } assign the first line to variable S
END { print S } print the first line

 

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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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