The JUNOS command-line interface (CLI) is the software interface you use to access the router—whether from the console or through a network connection. This chapter provides an overview of the JUNOS CLI.
The JUNOS CLI is a Juniper Networks-specific command shell that runs on top of a UNIX-based operating system kernel. By leveraging industry-standard tools and utilities, the CLI provides a powerful set of commands you can use to monitor and configure a router. (See Figure 1.)
The CLI is a straightforward command interface. You type commands on a single line, and the commands are executed when you press the Enter key. The CLI provides command help and command completion, and it also provides Emacs-style keyboard sequences that allow you to move around on a command line and scroll through recently executed commands.
Figure 1: Monitoring and Configuring Routers
Topics in this chapter include: