### About the Command Line Interface

This section discusses the command line interface. It provides information on the following:

- Methods of Supplying Commands
- Navigation and Editing Keys
- Online Help for Commands
- Abbreviating Commands

#### Methods of Supplying Commands

There are three methods for supplying Digi One RealPort or PortServer TS with the commands required to configure it. They are

- By accessing the command line from a directly-connected terminal.
- By accessing the command line from a LAN-based telnet terminal.
- By downloading a configuration file from a host.

#### Navigation and Editing Keys

Use the following keys to navigate along the command line and edit commands:

Action | Keys
Move the cursor back one space | Ctrl b
Move the cursor forward one space | Ctrl f
Delete the character to the left of the cursor | Back space
Delete the character under the cursor | Delete
Delete the character to the left of the cursor | Ctrl h
Scroll back through commands | Ctrl p
Scroll forward through commands | Ctrl n
Execute the command typed on the command line | Enter

#### Online Help for Commands

On-line help is available for commands. The following describes how to access help:

For information on... | Type...
All commands | ? (with no additional parameters)
A specific command | The command and then ? Example: `info ?` Example:`set user ?`

#### Abbreviating Commands

All commands can be abbreviated. You need only supply a sufficient number of command letters to uniquely identify the command.