S4128# ?
  alarm                    Alarm commands
  alias                    Set alias for a command
  batch                    Batch Mode
  boot                     Tell the system where to access the software image at bootup
  clear                    Clear command
  clock                    Configure the system clock
  commit                   Commit candidate configuration
  configure                Enter configuration mode
  copy                     Perform a file copy operation
  debug                    Debug command
  delete                   Perform a file delete operation on local file system
  dir                      Show the list of files for the specified system folder
  discard                  Discard candidate configuration
  exit                     Exit from the CLI
  generate                 Command to generate executed functionality
  help                     Display available commands
  image                    Image commands
  kill-session             Kill a CLISH session
  license                  License and digital fulfillment commands
  location-led             Set location LED
  lock                     Lock candidate configuration
  move                     Perform a file move/rename operation on local filesystem
  no                       No commands under exec mode
  ping                     ping -h shows help
  ping6                    ping6 -h shows help
  reload                   Reboot Dell EMC Networking Operating System
  show                     Show running system information
  start                    Activate transaction based configuration
  support-assist-activity  Support Assist related activity
  system                   System command
  terminal                 Set terminal settings
  traceroute               traceroute --help shows help
  unlock                   Unlock candidate configuration
  validate                 Validate candidate configuration
  write                    Copy from current system configuration

S4128# show boot
Current system image information:
===================================
Type      Boot Type      Active                   Standby                 Next-Boot
-----------------------------------------------------------------------------------
Node-id 1 Flash Boot     [A] 10.4.0E(R3)         [B] 10.4.0E(R3)         [A] active


S4128# show boot detail
Current system image information detail:
==========================================
Type:                     Node-id 1
Boot Type:                Flash Boot
Active Partition:         A
Active SW Version:        10.4.0E(R3)
Active SW Build Version:  10.4.0E(R3.233)
Active Kernel Version:    Linux 3.16.51
Active Build Date/Time:   2018-03-30T11:05:41Z
Standby Partition:        B
Standby SW Version:       10.4.0E(R3)
Standby SW Build Version: 10.4.0E(R3.233)
Standby Build Date/Time:  2018-03-30T11:05:41Z
Next-Boot:                active[A]

S4128# image
  cancel    Cancel image installation process
  copy      Copy active image to standby partition
  download  Perform a software download operation
  install   Perform a software install operation

S4128# dir ?
  config         Folder containing configuration files
  coredump       Folder containing coredump files
  home           Folder containing files in user's home directory
  image          Folder containing image files
  supportbundle  Folder containing support bundle files
  usb            Folder containing files on USB

S4128# dir config
Directory contents for folder: config
Date (modified)        Size (bytes)  Name
---------------------  ------------  ------------------------------------------
2020-12-02T14:06:01Z   37125         startup.xml

S4128# dir coredump
Directory contents for folder: coredump
Date (modified)        Size (bytes)  Name
---------------------  ------------  ------------------------------------------
2020-04-24T13:23:11Z   725107        core.in.telnetd.2020-04-24_13-23-10.gz