Four Frequently Used Junos Configuration Commands

Configuration mode provides four commands – edit, top, up, and exit - for moving up, down and through the Junos hierarchy. Apply these commands precisely where they belong. You will use them again and again.

• edit: Jumps you to an exact location that you specify within the hierarchy in which you are currently working. You issue the relative path based on your location in the hierarchy:

  
  

  [edit system]
  wiley@netnik# edit syslog host log
   
  [edit system syslog host log]
  wiley@netnik#

  
  

  You can only move up and down a particular hierarchy — not across the hierarchies — with the edit command. To move to another hierarchy, you must first go back to the top of configuration mode to the edit banner.

  
  



• top: Moves you instantly to the top of the configuration hierarchy.

  
  

  [edit system syslog host log]
  wiley@netnik# top
   
  [edit]
  wiley@netnik#

  
  



• Combine top and edit to quickly move to a new hierarchy location:

  
  

  [edit protocols ospf area]
  wiley@netnik# top edit system login
   
  [edit system login]
  wiley@netnik#

  
  



• up: Takes you up one level in the configuration hierarchy. You can append a number to specify how many levels, for example, up 4.

  
  



• exit: Returns you to the hierarchy point prior to the last edit command.

  
  

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Source:http://www.dummies.com/how-to/content/four-frequently-used-junos-configuration-commands.html