# File lib/whenever/command_line.rb, line 9
    def initialize(options={})
      @options = options

      @options[:file]       ||= 'config/schedule.rb'
      @options[:cut]        ||= 0
      @options[:identifier] ||= default_identifier

      if !File.exists?(@options[:file]) && @options[:clear].nil?
        warn("[fail] Can't find file: #{@options[:file]}")
        exit(1)
      end

      if [@options[:update], @options[:write], @options[:clear]].compact.length > 1
        warn("[fail] Can only update, write or clear. Choose one.")
        exit(1)
      end

      unless @options[:cut].to_s =~ /[0-9]*/
        warn("[fail] Can't cut negative lines from the crontab #{options[:cut]}")
        exit(1)
      end
      @options[:cut] = @options[:cut].to_i
    end