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Full Discussion: how to identify duplicate columns in a row
Top Forums Shell Programming and Scripting how to identify duplicate columns in a row Post 302370720 by radoulov on Thursday 12th of November 2009 08:44:14 AM
Old 11-12-2009
With Perl:

Code:
perl -ane'
  grep $_{$_}++, @F and print; undef %_
  ' infile

And another one with AWK:

Code:
awk '{
  for (i=1; i<=NF; i++)
    if (_[$i]++) { print; break }
	split(x, _)
  }' infile

If your AWK implementation supports delete <array>:

Code:
awk '{
  for (i=1; i<=NF; i++)
    if (_[$i]++) { print; break }
	delete _
  }' infile

Last edited by radoulov; 11-12-2009 at 09:53 AM..
 

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LEARN ABOUT X11R4

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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