? -- Present list of available commands
         arp -- Show arp table or arp-resolve an address
        boot -- Load and boot an executable image
         cat -- Concatenate (type) file(s)
        copy -- Copy a file
      delete -- Delete file(s)
         dir -- List files in directories
emergency-install -- Initiate Disaster Recovery
  flash_init -- Initialize filesystem(s)
      format -- Format a filesystem
        fsck -- Check filesystem consistency
        help -- Present list of available commands
   mgmt_init -- initialize management port
       mkdir -- Create dir(s)
        more -- Concatenate (display) file(s)
        ping -- Send ICMP ECHO_REQUEST packets to a network host
     readrtc -- Read RTC
      rename -- Rename a file
       reset -- Reset the system
       rmdir -- Delete empty dir(s)
         set -- Set or display environment variables
      set_bs -- Set attributes on a boot sector filesystem
   set_param -- Set system parameters in flash
        type -- Concatenate (type) file(s)
       unset -- Unset one or more environment variables
     version -- Display boot loader version
    writertc -- Write RTC