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Command Line Interface

Chapter 17 153

Introduction

The Digi CM unit runs the embedded Hard Hat Linux operating system. The

command line interface for configuration purposes is accessible only by the

root user. The system administrator has read only privileges from the

command line. By default the root user is connected to the CLI (command line

interface) when accessing the Digi CM unit through Telnet or SSH. To gain

access to the command prompt, the root user uses the username root and the

root password. The default root password is dbps.

This chapter includes the Linux commands available on the embedded Linux

operating system and the location of files useful to the root user for

administrative purposes.

Note: The root user should be aware that deleting or corrupting files may prevent the

Digi CM unit from booting properly. Before editing any files, be sure to back up

your configuration files.

Linux Commands

The purpose of this section is to list the various Linux commands available on

the Digi CM unit. This is simply a listing of commands and does not detail what

the commands do or give their particular parameters. If you need more

information, see the man pages on a Linux system.

Two commands that are very important for saving and applying changes to the

configuration files are:

• saveconf: The saveconf command saves the configuration files to

flash memory.

• applyconf: The applyconf command immediately applies the

configuration changes.

The configuration files are located in /tmp/cnf directory.

Two system utility menus that are important for accessing and

configuring the

Digi CM unit and the serial ports are the portaccessmenu and

configmenu.

• portaccessmenu: This menu allows the user to access the serial

ports on the Digi CM unit.

• configmenu: This menu enables the system administrator to configure

the Digi CM unit. It has essentially the same functionality as the web

interface for configuring a unit with the exception of the ability to create

custom menus.

• portreset #: This command allows the user to reset a specific port. It

restarts all processes associated with the port.

Chapter 17

Command Line Interface

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