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Full Discussion: Awk to count occurences
Top Forums Shell Programming and Scripting Awk to count occurences Post 302483614 by summer_cherry on Monday 27th of December 2010 10:55:21 PM
Old 12-27-2010
try perl below

Code:
while(<DATA>){
  my @tmp = split;
  if($.==1){
   $pre=$tmp[1];
   $cnt=1;
   next;
  }
  else{
   if($tmp[1] eq $pre){
     $cnt++;
   }
   else{
    $hash{$pre}->{$cnt}=1;
    $cnt=1;
    $pre=$tmp[1];
  }
 }
}
$hash{$pre}->{$cnt}=1;
foreach my $key (keys %hash){
  my %tmp = %{$hash{$key}};
  foreach my $k (keys %tmp){
   print $key,":", $k,"\n" if $k>1;
  }
}
__DATA__
Student1 arts
Student2 science
Student3 arts
Student4 science
Student5 science
Student6 science
Student7 science
Student8 science
Student9 science
Student10 science
Student11 science
Student12 arts
Student13 arts
Student14 arts
Student15 arts
Student16 science
Student17 science
Student18 science
Student19 science
Student20 science

This User Gave Thanks to summer_cherry For This Post:
 

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ifindex(8)                                                          FTN mailer                                                          ifindex(8)

NAME
ifindex - Create nodelist index SYNOPSIS
ifindex [-h] [-x verbosity] [-I file] DESCRIPTION
Ifindex creates a nodelist index which is used by ifcico for faster nodelist lookups. Depending on the OPTIONS set when compiling the program, one of 3 different nodelist indices will be generated: a db- a (g)dbm- or a dbz- version. The dbz- type nodelist-index has some advantages (smaller indices and faster index generation) over the other 2 types but is cur- rently only in PRE-ALPHA state - you should also read the README before using this type of nodelist-index. OPTIONS
-h Display a short help message. -x Verbosity Set the debug verbosity. Verbosity may be a number from 0 to 32 to set 'on' bits from 1 to number, or a string of letters where 'a' = bit 1, 'b' = bit 2, etc. up to bit 26. -I File Use the alternate configuration file File. RETURN CODES
0 Successfull 64 command line usage error 65 error reading config file DEBUG VERBOSITY
d lock files f aka matching g outbound directories h call j session handshake k file transfer l filelist m nodelist flags r modem t nodelist index z hydra protocol FILES
$IFLIBDIR/config Runtime configuration file. nodelist.??? A list of nodes in an FTN network. SEE ALSO
ifcico(8), ifinfo(8) ACKNOWLEDGEMENTS
Some ideas taken from Fidogate/RFmail package, written by Teemu Torma and hacked by Martin Junius. Some tcp code taken from JE version, written by Tsuneo Tanaka <ttan@twics.com> 1993, 1994 Eugene Crosser This is free software. You can do what you wish with it as long as this copyright notice is preserved. Manpage and dbz-nodelist-index support by Christof Meerwald <cmeerw@mail.htl.fh-sbg.ac.at> Many thanks to the institute of computer science in Salzburg/Austria and especially to Anton Hofmann <hofmann@wst.edvz.sbg.ac.at> who made further work possible during his lecture. 3.0.cm.alpha-2 May 29, 1997 ifindex(8)
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