history_counter.rb

history_counter.rb

#! /usr/local/bin/ruby
require 'kconv'
LENGTH  = 3
COUNT   = 5

ines     = File.read('/home/<USERNAME>/.bash_history').toutf8.split("\n")
lines_uq = lines.uniq
rethash  = Hash.new

lines_uq.each do |line|
  rethash[line] = lines.count(line)
end

retmats = rethash.select{|key, value| (key.length >= LENGTH) & (value > COUNT)}
  .sort{|a, b| a.last <=> b.last}

maxlength = retmats.map{|mat| mat.last.to_s.length}.max

retmats.each do |retmat|
  puts ("*" * (maxlength - retmat.last.to_s.length)) + "#{retmat.last}: #{retmat.first}"
end