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Full Discussion: remove consecutive duplicate rows
Top Forums Shell Programming and Scripting remove consecutive duplicate rows Post 302529187 by ctsgnb on Wednesday 8th of June 2011 06:03:20 PM
Old 06-08-2011
Make all lines uniq (make duplicate consecutive line appear only once):
Code:
awk '{sub(".*"$2,$2)}1' yourfile | uniq

Log duplicate lines in a file (will be logged only lines that consecutively appear twice or more):
Code:
awk '{sub(".*"$2,$2)}1' yourfile | uniq -d >duplicate.txt

Log lines that appear not more than once consecutively in a file :
Code:
awk '{sub(".*"$2,$2)}1' yourfile | uniq -u >single.txt

Log all lines prefixed by the number of times they appear consecutively:
Code:
awk '{sub(".*"$2,$2)}1' yourfile | uniq -c >count.txt

You can renumber the lines if necessary with ... | cat -b or ... | cat -n if necessary


By the way, do you really care about the first field (line number) or can we get rid of it ?
Last edited by ctsgnb; 06-08-2011 at 07:14 PM..
 

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LEARN ABOUT DEBIAN

unitconv

unitconv(1)							     XCrySDen							       unitconv(1)

NAME

       unitconv - simple energy and length units converter

SYNOPSIS

       unitconv [unit] value
       unitconv [unit] expression

DESCRIPTION

       unitconv  is  a	simple	energy and length units converter (written in Tcl). It is a utility program of xcrysden package (http://www.xcrys-
       den.org/).

ENERGY UNITS

       The following energy units are supported.  The following list contain the "unit -- description" pairs, where the unit is to be specified on
       the command line.

       au -- Hartree

       ry -- Rydberg

       ev -- eV (electron volt)

       kjm -- kJ/mol

       kj -- kJ

       kcalm -- kcal/mol

       kcal -- kcal

LENGTH UNITS

       The following length units are supported (usage as above):

       angs -- Angstrom

       bohr -- Bohr radius

       m -- meter

EXAMPLES

       Convert a value from eV to other energy units:

       unitconv ev 3.25

       Calculate an expression (values in Rydberg unit) and convert to other energy units (note that expression must be quoted):

       unitconv ry "-103.134567 - (-240.691356 - -2*17.543471)/2"

       In expression also mathematical functions available in tclsh can be used.

COPYRIGHT

       Copyright (C) 1996--2012 Anton Kokalj

       This  program  is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.  You should have received a  copy	of
       the  GNU  General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
       Boston, MA 02111-1307, USA.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY	WARRANTY;  without  even  the  implied	warranty  of  MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

XCrySDen							   March 9, 2012						       unitconv(1)
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