About This Guide
The Junos OS command-line interface (CLI) is a command shell specific to Juniper Networks. This command shell runs on top of the FreeBSD UNIX-based operating system kernel for Junos OS. Using industry-standard tools and utilities, the CLI provides a powerful set of commands that you can use to monitor and configure Juniper Networks devices running Junos OS. This guide contains information about the CLI for Junos OS.