Meant to be used with Markdown or other plaintext files. Looks for your estimated hours for a project, written in the syntax: [X hours]. Examples: [1 hour] , [10 hours], [10.5 hours], [.5 hours], [0.5 hours] Note that it doesn't work for estimations on the same line. I write my spec sheets where 1 bullet point has 1 estimation.

spec_sheet_calculator.rb

# Looks at the text file provided and uses my format of spec sheet hours to calculate the total hours of the project.
raise "Must provide Source File!"  if ARGV.size < 1

total_hours = 0


spec_sheet = File.open(ARGV[0])
spec_sheet.each{ |line|
specced_hours = /\[[^0-9.]*(?<hours>\d*\.\d+|[^\.]\d*).*\]/.match(line)

unless specced_hours.nil?
  specced_hours = specced_hours[:hours].to_f
	total_hours += specced_hours
end

}

puts "#{total_hours} hours specced"