Chapter 2 Command-Line Interface; Overview; Command Modes - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual

CHAPTER 2
Command-Line Interface

Overview

Command Modes

Copyright © 2010, Juniper Networks, Inc.
This chapter provides information about the E Series router command-line interface
(CLI).
This chapter contains the following sections:
Overview on page 27
Platform Considerations on page 45
Accessing the CLI on page 45
CLI Command Privileges on page 49
Using Help on page 60
Using Command-Line Editing on page 63
Accessing Command Modes on page 66
The CLI is the interface to the software that you use whenever you access the
router—whether from the console or through a remote network connection. The CLI,
which automatically starts after the router finishes booting, provides commands that
you use to perform various tasks, including configuring the JunosE Software and monitoring
and troubleshooting the software, network connectivity, and the router hardware.
Managing your router using the CLI gives you access to thousands of commands. The
router's CLI uses an industry de facto standard look and feel, which might be familiar to
you. If you are new to this CLI, it is helpful to read this entire chapter, where you can learn
about CLI shortcuts and other helpful information.
Command modes set a context for the CLI. Each command in the CLI is available from
one or more command modes. From some command modes you can only view router
information; from others you can perform configuration tasks. For example, you can
access User Exec mode to display information and then access Global Configuration
mode to set parameters or enable a particular feature. By recognizing the command-line
prompt, you can identify where you are in the CLI at any given point. When you can easily
identify where you are, it is easy to get to where you want to be.
27