text: **CLI setup**
  
  The IBM Spectrum Virtualize system features a powerful CLI that offers more options and 
  flexibility as compared to the graphical user interface (GUI). This appendix describes how to 
  configure a management system by using Secure Shell (SSH) protocol to connect to the IBM 
  Spectrum Virtualize system for issuing commands by using the CLI. 
  
  For more information about the CLI, see IBM Knowledge Center. 
  
  **Note:**If a task completes in the GUI, the associated CLI command is always displayed in 
  the details, as shown throughout this book. 
  
  In the IBM Spectrum Virtualize GUI, authentication is performed by supplying a user name 
  and password. CLI uses SSH to connect from a host to the IBM Spectrum Virtualize system. 
  A private and a public key pair or user name and password is necessary. 
  
  The use of SSH keys with a passphrase is more secure than a login with user name and 
  password because authenticating to a system requires the private key and the passphrase. 
  By using the other method, only the password is required to obtain access to the system. 
  
  When SSH keys are used without a passphrase, it becomes easier to log in to a system 
  because you must provide only the private key when performing the login and you are not 
  prompted for password. This option is less secure than the use of SSH keys with a 
  passphrase. 