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Top Forums Shell Programming and Scripting pattern search and print using sh Post 302582041 by agama on Wednesday 14th of December 2011 08:27:40 PM
Old 12-14-2011
First off, grep, fgrep and egrep can all read files, so there is no need to use cat. You couls use:
Code:
egrep "pat1|pat2" filename

which is more efficient than
Code:
cat filename | egrep "pat1|pat2"

Secondly, since you want bits from two different lines, best to let awk do all of the work. Something like this:

Code:
awk '
    /^insert:/ { save = $2; next }
    /^machine:/ { printf( "%s,%s\n", save, $2 ); next }
'  input-file


Last edited by agama; 12-14-2011 at 09:30 PM.. Reason: typo; example
This User Gave Thanks to agama For This Post:
 

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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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