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Top Forums Shell Programming and Scripting Extracting Multiple Lines from a Text File Post 302583105 by jim mcnamara on Monday 19th of December 2011 02:47:42 PM
Old 12-19-2011
grep solution

Code:
grep -e '^Line 2' -e '^Line 4' -e '^$'  inputfile > newfile

The ^ indicates start of a line '^$' is a blank line with no spaces.

Last edited by jim mcnamara; 12-20-2011 at 09:49 AM..
 

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Geometry::Primitive::Line(3pm)				User Contributed Perl Documentation			    Geometry::Primitive::Line(3pm)

NAME
Geometry::Primitive::Line - A Line DESCRIPTION
Geometry::Primitive::Line represents a straight curve defined by two points. SYNOPSIS
use Geometry::Primitive::Line; my $line = Geometry::Primitive::Line->new(); $line->start($point1); $line->end($point2); ATTRIBUTES
end Set/Get the end point of the line. start Set/Get the start point of the line. METHODS
new Creates a new Geometry::Primitive::Line contains_point Returns true if the supplied point is 'on' the line. Accepts either a point object or an x y pair. grow Does nothing, as I'm not sure how. Patches or hints welcome. is_parallel ($other_line) Returns true if the supplied line is parallel to this one. is_perpendicular ($other_line) Returns true if the supplied line is perpendicular to this one. length Get the length of the line. point_end Get the end point. Provided for Shape role. point_start Get the start point. Provided for Shape role. scale Does nothing at the moment. slope Get the slope of the line. to_string Guess! y_intercept Returns the Y intercept of this line. AUTHOR
Cory Watson <gphat@cpan.org> COPYRIGHT &; LICENSE You can redistribute and/or modify this code under the same terms as Perl itself. perl v5.10.1 2010-01-10 Geometry::Primitive::Line(3pm)
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