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Full Discussion: Grep command
Top Forums Shell Programming and Scripting Grep command Post 302994246 by Theo Score on Monday 20th of March 2017 11:56:56 PM
Old 03-21-2017
Grep command
Hi All,

I have a directory of simulation data files with structure dump*.data and an example of such data file is given below.

Code:
ITEM: TIMESTEP
10000
ITEM: NUMBER OF ATOMS
6
ITEM: BOX BOUNDS ff ff ff
-0.15 0.15
0 0.5
-0.15 0.15
ITEM: ATOMS id type x y z vx vy vz fx fy fz omegax omegay omegaz radius c_nconts 
1 1 -0.0506691 0.371195 -0.0540098 0 -1 -0 0 0 0 0 0 0 0.03 0 
4 2 -0.0400495 0.270148 0.0120722 0 -1.25925 0 0 -0.345173 0 0 0 0 0.02 0 
2 1 -0.0102719 0.415304 0.0113916 0 -1 -0 0 0 0 0 0 0 0.01 0 
6 2 0.0192567 0.33773 0.0256545 0 -1 -0 0 0 0 0 0 0 0.01 0 
3 1 0.0371105 0.373507 -0.00483919 0 -1 -0 0 0 0 0 0 0 0.02 0 
5 2 0.0426929 0.366908 0.057645 0 -1 -0 0 0 0 0 0 0 0.03 0

I have made up the script below which filters specific number in the first column and read thorough in all the data files

Code:
grep -h "^$1 " dump[1-9]????.data > particle$1.dat 
grep -h "^$1 " dump[1-9]?????.data >> particle$1.dat
grep -h "^$1 " dump[1-9]??????.data >> particle$1.dat

Now I want the code to read first the second row (10000 in this case) and append it as the first column of the results of the current code. Row 2 in the data files have values of 10000, 20000, 30000,...1790000,1800000. For example, if I read for row which starts with 4, I want the output to be

Code:
10000 4 2 -0.0400495 0.270148 0.0120722 0 -1.25925 0 0 -0.345173 0 0 0 0 0.02 0

Thank you.
Last edited by Theo Score; 03-21-2017 at 01:02 AM..
 

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LEARN ABOUT DEBIAN

test::data::array

Array(3pm)						User Contributed Perl Documentation						Array(3pm)

NAME

       Test::Data::Array -- test functions for array variables

SYNOPSIS

       use Test::Data qw(Array);

DESCRIPTION

   Functions
       array_any_ok( ITEM, ARRAY [, NAME] )
	   Ok if any element of ARRAY is ITEM.

       array_none_ok( ITEM, ARRAY [, NAME] )
	   Ok if no element of ARRAY is ITEM.

       array_once_ok( ITEM, ARRAY [, NAME] )
	   Ok if only one element of ARRAY is ITEM.

       array_multiple_ok( ITEM, ARRAY [, NAME] )
	   Ok if more than one element of ARRAY is ITEM.

       array_max_ok( NUMBER, ARRAY [, NAME] )
	   Ok if all elements of ARRAY are numerically less than or equal to NUMBER.

       array_min_ok( NUMBER, ARRAY [, NAME] )
	   Ok if all elements of ARRAY are numerically greater than or equal to NUMBER.

       array_maxstr_ok( ITEM, ARRAY [, NAME] )
	   Ok if all elements of ARRAY are asciibetically less than or equal to MAX.

       array_minstr_ok( ITEM, ARRAY [, NAME] )
	   Ok if all elements of ARRAY are asciibetically greater than or equal to MAX.

       array_sum_ok( SUM, ARRAY [, NAME] )
	   Ok if the numerical sum of ARRAY is SUM.

       array_empty_ok( ARRAY [, NAME] )
	   Ok if the array contains no elements.

       array_length_ok( ARRAY, LENGTH [, NAME] )
	   Ok if the array contains LENGTH number of elements.

       array_sortedstr_ascending_ok( ARRAY, [, NAME] )
	   Ok if each succeeding element is asciibetically greater than or equal to the one before.

       array_sortedstr_descending_ok( ARRAY, [, NAME] )
	   Ok if each succeeding element is asciibetically less than or equal to the one before.

       array_sorted_ascending_ok( ARRAY, [, NAME] )
	   Ok if each succeeding element is numerically greater than or equal to the one before.

       array_sorted_descending_ok( ARRAY, [, NAME] )
	   Ok if each succeeding element is numerically less than or equal to the one before.

SEE ALSO

       Test::Data, Test::Data::Scalar, Test::Data::Function, Test::Data::Hash, Test::Builder

SOURCE AVAILABILITY

       This source is in Github:

	       http://github.com/briandfoy/test-data/tree/master

AUTHOR

       brian d foy, "<bdfoy@cpan.org>"

COPYRIGHT AND LICENSE

       Copyright (c) 2002-2009 brian d foy.  All rights reserved.

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

perl v5.14.2							    2009-02-12								Array(3pm)
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