Redback产品资料二系统界面.ppt

System Basics Module 2 Command Line Interface Lesson 2-1 Lesson Objectives Introduce CLI structure and modes Discuss privilege levels and options Introduce shortcuts CLI editing Command aliases Show command output Show commands in config mode Discuss what “transaction-based” means Command Line Interface Map Prompt Exec Mode Each command has a privilege level – can be defined on a per-command basis Default levels Exec commands: 3 Debug commands: 10 Config commands: 10 Privilege level access configured in user definition Default is 6 – can access commands with privilege level of 6 or below Prompt indicates current privilege level means privilege of 6 or lower # means privilege of 7 or higher Configuration Modes Monitor Mode Exec mode command “Repeating show command” automatically updates screen every 2 seconds Cannot issue other commands while running Kill w/ Ctrl-C or times out after 10 minutes by default Can monitor specific process or entire system Maneuvering through the CLI CLI Help “?” lists commands at current level “command ?” lists options for that command Example 1: exec mode Example 2: configuration modes Command Line Editing Parser feedback Use up/down arrow keys to scroll through previous commands. Use left/right arrow keys to scroll through command Full Emacs editing support Press Enter at any time; parser reads the entire line Command Aliases User-defined alias for commonly-used commands Example: Modifying Show Commands UNIX-like “pipe” functionality Selectively filters show command output Example: display all lines in the current configuration file that contain the word (pattern) “port”: Transaction-Based Processing Debug Only monitoring station sees it CTRL-S to pause debug output – any key to continue Configuration Changes not executed until committed Can be backed out line by line with “no” command Entire set of changes backed out with “abort” command Explicit commit commit Implicit commit exit and end Any Questions? File Management L