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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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abort(3C)																 abort(3C)

NAME
abort() - generate a software abort fault SYNOPSIS
DESCRIPTION
first closes all open files, streams, directory streams, and message catalogue descriptors, if possible, then causes the signal to be sent to the calling process. This may cause a core dump to be generated (see signal(2)). If the signal is caught, the handling function is executed. If the handling function returns, the action for is then reset to and the sig- nal is sent again to the process to ensure that it terminates. RETURN VALUE
does not return. ERRORS
No errors are defined. APPLICATION USAGE
is not intended to be caught. DIAGNOSTICS
If is neither caught nor ignored, and the current directory is writable, a core dump is produced and the message is written by the shell. SEE ALSO
adb(1), exit(2), kill(2), signal(2), signal(5), thread_safety(5). STANDARDS CONFORMANCE
abort(3C)
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