# File lib/smart_proxy_salt/salt_main.rb, line 139
    def find_salt_binaries
      @salt_key = which('salt-key')
      unless File.exists?("#{@salt_key}")
        logger.warn 'unable to find salt-key binary'
        raise 'unable to find salt-key'
      end
      logger.debug "Found salt-key at #{@salt_key}"

      @salt = which('salt')
      unless File.exists?("#{@salt}")
        logger.warn 'unable to find salt binary'
        raise 'unable to find salt'
      end
      logger.debug "Found salt at #{@salt}"

      @sudo = which('sudo')
      unless File.exists?(@sudo)
        logger.warn 'unable to find sudo binary'
        raise 'Unable to find sudo'
      end
      logger.debug "Found sudo at #{@sudo}"
      @sudo = "#{@sudo}"
    end