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perl -ne 'chomp; $uniq{$_}++; END{print $_ . " => " . $uniq{$_} . "\n"
+ for keys %uniq}'

perl -lne '$uniq{$_}++; END{print $_ . " => " . $uniq{$_} for keys %un
+iq}'

awk -vN=1 '{if($N in uniq){uniq[$N]++}else{uniq[$N]++}}END{for(k in un
+iq){print k," => ",uniq[k]}}'

/* reads whole lines from stdin and counts how many times each
   was repeated, overall and NOT "adjacently"
...
        cout << itr->first << " => " << itr->second << endl;
    }
}

Ncols=95
Nthreads=4
...
  echo doing column $acol
  sem -j${Nthreads} sh tmpscript${acol}.sh
done