*24 Jan 2015* <div class="posthaven-post-body"> Here's a neat ruby script to group and count the number of occurrences of lines inside a given file. count.rb list = IO.readlines(ARGV\[0\]) h = Hash.new {\|hash, key\| hash\[key\] = 0} list.each {\|item\| h\[item\] += 1} h = h.sort_by { \|k,v\| v }.reverse h.each_with_index do \|p,i\| puts "(#{p\[1\]}) \#{p\[0\]}" if ARGV\[1\] and ARGV\[1\].to_i \<= i + 1 break end end Usage is: ruby count.rb \<file\> \[show_at_most_n\] If you have a file named "faren.txt" comprised of the following lines: test test awesome dude dude dude faren meran Running the script  with: ruby count.rb faren.txt Will yield the following result: (3) dude (2) test (1) awesome (1) faren (1) meran In addition, if you pass the "show_at_most_n" parameter (a number), it will only print that number of results. For example 2 will show the following: (3) dude (2) test </div> [[tags/ruby|ruby]] [[tags/software_development|software_development]] [[tags/technology|technology]]