Unix remove duplicates,sort and display the max count - 


3/12/2013 12:00 639 count 3/12/2013 12:06 693 count 3/12/2013 12:12 636 count 3/12/2013 12:18 649 count 3/12/2013 12:24 658 count 3/12/2013 12:30 926 count 3/12/2013 12:36 721 count 3/12/2013 12:42 797 count 3/12/2013 12:48 717 count 3/12/2013 12:00 639 count 3/12/2013 12:06 700 count 3/12/2013 12:12 636 count 3/12/2013 12:18 649 count 3/12/2013 12:24 658 count 3/12/2013 12:30 726 count 3/12/2013 12:36 721 count 3/12/2013 12:42 850 count 3/12/2013 12:48 900 count 3/12/2013 12:00 639 count 3/12/2013 12:06 693 count 3/12/2013 12:12 636 count 3/12/2013 12:18 649 count 3/12/2013 12:24 658 count 3/12/2013 12:30 926 count 3/12/2013 12:36 721 count 3/12/2013 12:42 797 count 3/12/2013 12:48 950 count

output should below:

3/12/2013 12:00 639 count 3/12/2013 12:12 636 count 3/12/2013 12:18 649 count 3/12/2013 12:24 658 count 3/12/2013 12:30 926 count 3/12/2013 12:36 721 count 3/12/2013 12:06 700 count 3/12/2013 12:30 726 count 3/12/2013 12:42 850 count 3/12/2013 12:48 900 count

try doing :

sort -u -n -k 3 file.txt

note

  • -u stands uniq
  • -n stands numerical sort
  • -k 3 stands sort 3rd column

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