Displaying available commands using Tab

Example: Displaying commands using Tab

[ex:/configure log]
A:admin@node-2# Press Tab

 accounting-policy        app-route-notifications  apply-groups
 apply-groups-exclude     event-damping            event-handling
 event-trigger            file                     filter
 foo                      log-events               log-id
 route-preference         services-all-events      snmp-trap-group
 syslog                   throttle-rate

 back                     delete                   edit-config
 enable                   exec                     exit
 history                  info                     insert
 logout                   oam                      ping
 pwc                      pyexec                   ssh
 telnet                   top                      traceroute
 tree

 annotate                 commit                   compare
 copy                     discard                  rename
 update                   validate

[ex:/configure log]
A:admin@node-2# event-damping Press Tab
 
 <event-damping>
 false
 true

 accounting-policy        app-route-notifications  apply-groups
 apply-groups-exclude     event-handling           event-trigger
 file                     filter                   log-events
 log-id                   route-preference         services-all-events
 snmp-trap-group          syslog                   throttle-rate

 delete                   insert

The ? help displays similar information but only displays global or configuration commands at the operational root or at the root of a command context.

Example: Global commands displayed at the environment root context

[/environment]
A:admin@node-2# ?

 command-completion    + Enter the command-completion context
 console               + Enter the console context
 message-severity-     + Enter the message-severity-level context
  level
 more                  - Prompt to continue or stop when output text fills page
 progress-indicator    + Enter the progress-indicator context
 prompt                + Enter the prompt context
 time-display          - Time zone displayed before the prompt
 time-format           - Time format to display date and time

 Global commands:
 back                  - Move back one or more levels
 delete                - Delete an element
 edit-config           - Enter a candidate configuration mode
 enable                - Enable administrative mode
 exec                  - Execute commands from a file
 exit                  - Return to the previous context or to operational root
 history               - Show the command history
 info                  - Show the information under the present working context
 logout                - Exit the CLI session
 oam                   - Perform OAM tests
 ping                  - Ping an IP address or DNS name
 pwc                   - Show the present working context
 pyexec                - Execute a Python application
 ssh                   - SSH to an IP address or DNS name
 telnet                - Telnet to an IP address or DNS name
 top                   - Move to the top level of the context
 traceroute            - Show the route taken to an IP address or DNS name
 tree                  - Show the command tree under the present working context

Example: Global commands available in the context

The global commands are not displayed in the environment prompt context, for example, although these commands are still available in the context.

[/environment prompt]
A:admin@node-2# ?

 context               - Show the current command context in the prompt
 newline               - Add a new line before every prompt line
 timestamp             - Show the timestamp before the first prompt line
 uncommitted-changes-  - Show an asterisk (*) when uncommitted changes exist
  indicator

[/environment prompt]
A:admin@node-2# info detail
    context true
    newline true
    timestamp false
    uncommitted-changes-indicator true