Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

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Get help from the CLI

How to get help directly from the CLI, to check available commands, completions, syntax and more.

Display a list of the available shell commands

At the command prompt, type help.
The CLI will display a list of the available system shell commands.
user@system:~$ help
GNU bash, version 5.1.4(1)-release (x86_64-pc-linux-gnu)
These shell commands are defined internally.  Type `help' to see this list.
Type `help name' to find out more about the function `name'.
Use `info bash' to find out more about the shell in general.
Use `man -k' or `info' to find out more about commands not in this list.

A star (*) next to a name means that the command is disabled.
 job_spec [&]                                                                        
 (( expression ))                                                                    
 . filename [arguments]                                                              
 :                                                                                   
 [ arg... ]                                                                          
 [[ expression ]]                                                                    
 alias [-p] [name[=value] ... ]                                                      
 bg [job_spec ...]                                                                   
 bind [-lpsvPSVX] [-m keymap] [-f filename] [-q name] [-u name] [-r keyseq] [-x keys>
 break [n]                                                                           
 builtin [shell-builtin [arg ...]]                                                   
 caller [expr]                                                                       
 case WORD in [PATTERN [| PATTERN]...) COMMANDS ;;]... esac                          
 cd [-L|[-P [-e]] [-@]] [dir]
...and so on. (You'll see much more output, in two columns, but we've truncated it for this example.)

Display help for a specific shell command

At the command prompt, type help <command>, where <command> is a specific shell command.
The CLI will display help and usage guidelines for that command.

Display a list of all available Vyatta NOS commands

At the command prompt — in either mode — press the Tab key or the ? key.
user@system:~$ <Tab>
or
user@system:~$ <?>
The CLI will display a list of the available commands.
Possible completions:
  add         Add an object to a service
  clear       Clear system information
  clone       Clone an object
  configure   Enter configure mode
  copy        Copy an object
  delete      Delete an object
  download    Download an object
  generate    Generate an object
  monitor     Monitor system information
  move        Move an object
  mtrace      Show multicast path in ASCII graphic format
  ping        Send Internet Control Message Protocol (ICMP) echo request
  poweroff    Poweroff the system
  reboot      Reboot the system
  release     Release specified variable
  rename      Rename an object
  renew       Renew specified variable
  request     Request an operation be performed
  reset       Reset a service
  restart     Restart a service
  set         Set operational options
  show        Show system information
  spawn       Spawn a native Linux process
  ssh         Start a remote Secure Shell (SSH) connection.
  start       Start a service
  telnet      Telnet to a node
  traceroute  Track network path to node
  twping      Calculate stats using Two-Way Active Measurement Protocol (TWAMP)
  update      Update data for a service
  upgrade     Upgrade data for a service
  upload      Download an object
user@system:~$

Display available Vyatta NOS command completions

When you have typed the first part of a command string and you're not sure exactly what to type next, press the Tab key or the ? key.
The CLI will display a filtered list of available commands and completions that are appropriate to that context.