Cisco#sh ?
  aaa                  Show AAA values
  access-expression    List access expression
  access-lists         List access lists
  accounting           Accounting data for active sessions
  adjacency            Adjacent nodes
  aliases              Display alias commands
  arp                  ARP table
  async                Information on terminal lines used as router interfaces
  backup               Backup status
  bgp                  BGP information
  bridge               Bridge Forwarding/Filtering Database [verbose]
  buffers              Buffer pool statistics
  c1700                Show c1700 information
  caller               Display information about dialup connections
  cca                  CCA information
  cdapi                CDAPI information
  cdp                  CDP information
  cef                  Cisco Express Forwarding
  class-map            Show QoS Class Map
  clock                Display the system clock
  cns                  CNS subsystem
  compress             Show compression statistics
  configuration        Contents of Non-Volatile memory
  connection           Show Connection
  context              Show context information
  controllers          Interface controller status
  cops                 COPS information
  crypto               Encryption module
  debugging            State of each debugging option
  derived-config       Derived operating configuration
  dhcp                 Dynamic Host Configuration Protocol status
  diag                 Show diagnostic information for port adapters/modules
  dialer               Dialer parameters and statistics
  dnsix                Shows Dnsix/DMDP information
  dxi                  atm-dxi information
  entry                Queued terminal entries
  exception            exception informations
  file                 Show filesystem information
  flash:               display information about flash: file system
  frame-relay          Frame-Relay information
  history              Display the session command history
  hosts                IP domain-name, lookup style, nameservers, and host table
  html                 HTML helper commands
  idb                  List of Hardware Interface Descriptor Blocks
  interfaces           Interface status and configuration
  ip                   IP information
  ipv6                 IPv6 information
  kerberos             Show Kerberos Values
  key                  Key information
  line                 TTY line information
  llc2                 IBM LLC2 circuit information
  location             Display the system location
  logging              Show the contents of logging buffers
  memory               Memory statistics
  modemcap             Show Modem Capabilities database
  ntp                  Network time protocol
  parser               Display parser information
  policy-map           Show QoS Policy Map
  ppp                  PPP parameters and statistics
  privilege            Show current privilege level
  processes            Active process statistics
  protocols            Active network routing protocols
  qdm                  Show information about QoS Device Manager
  queue                Show queue contents
  queueing             Show queueing configuration
  radius               Shows radius information
  random-detect-group  display random-detetct group
  registry             Function registry information
  reload               Scheduled reload information
  rhosts               Remote-host+user equivalences
  rif                  RIF cache entries
  rmon                 rmon statistics
  route-map            route-map information
  rtr                  Response Time Reporter (RTR)
  running-config       Current operating configuration
  sessions             Information about Telnet connections
  smf                  Software MAC filter
  snapshot             Snapshot parameters and statistics
  snmp                 snmp statistics
  sntp                 Simple network time protocol
  spanning-tree        Spanning tree topology
  ssh                  Status of SSH server connections
  ssl                  Show SSL command
  stacks               Process stack utilization
  standby              Hot Standby Router Protocol (HSRP) information
  startup-config       Contents of startup configuration
  subscriber-policy    Subscriber policy
  subsys               Show subsystem information
  tacacs               Shows tacacs+ server statistics
  tcp                  Status of TCP connections
  tech-support         Show system information for Tech-Support
  template             Template information
  terminal             Display terminal configuration parameters
  tgrm                 Trunk Group Resource Mananger info
  time-range           Time range
  track                Tracking information
  traffic-shape        traffic rate shaping configuration
  users                Display information about terminal lines
  version              System hardware and software status
  vlans                Virtual LANs Information
  vpdn                 VPDN information
  vtemplate            Virtual Template interface information
  whoami               Info on current tty line
  x25                  X.25 information
  x29                  X.29 information