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Top Forums Shell Programming and Scripting Perl- Finding average "frequency" of occurrence of duplicate lines Post 302545593 by yazu on Tuesday 9th of August 2011 01:19:21 AM
Old 08-09-2011
Do you want something like this?
Code:
% cat INPUTFILE
a
b
a
c
b
a
a
d
d
% perl -lne '
  $seen{$_}++;
  END {
    for $key (sort keys %seen) {
      printf "%s %.2f%%\n", $key, $seen{$key}/$. * 100;
    }
}' INPUTFILE
a 44.44%
b 22.22%
c 11.11%
d 22.22%

 

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