add a script to dump most common commands from zhistory

hist

@@ -0,0 +1,43 @@
+#!/usr/bin/env ruby
+# Project  Name: None
+# File / Folder: hist.rb
+# File Language: ruby
+# Copyright (C): 2006 heptadecagram
+# First  Author: heptadecagram
+# First Created: 2006.03.13 20:14:58
+# Last Modifier: sjs
+# Last Modified: 2010.02.11
+#
+# now works w/ zsh and reports commands that account for at least 1% of the total
+
+command = {}
+execution = {}
+$total = 0
+
+IO.foreach('/Users/sjs/config/zsh/zhistory') do |line|
+  line.chomp! =~ /^:\s\d+:\d+;((\S+).*)$/
+  next if $1.nil? || $2.nil?
+  execution[$1] = 1 + execution[$1].to_i
+  command[$2] = 1 + command[$2].to_i
+  $total += 1
+end
+
+puts $total
+
+execution = execution.select {|a,b| b.to_f / $total > 0.01}
+command = command.select {|a,b| b.to_f / $total > 0.01}
+
+Max_length = execution.sort_by {|a| a[0].length }.reverse[0][0].length
+
+def print_hash(hash)
+	sorted = hash.sort {|a,b| b[1] <=> a[1] }
+	sorted.each do |cmd,value|
+		printf " %#{Max_length}s: %3d(%.2f%%)\n", cmd, value, value.to_f / $total
+	end
+end
+
+
+puts "Executions:\n"
+print_hash(execution)
+puts "Commands:\n"
+print_hash(command)