Step 5. Look at the Directory Structure of the DT7837

Once you have logged into the DT7837 module, you can use standard Linux commands to change directories, start programs, work with files, compile programs, and so on.

To get started with the DT7837, enter the following Linux commands to look at the directory structure of the Linux file system for the DT7837:

Note: When typing commands into the terminal emulator window, it is often beneficial to copy and paste commands from this help file and other sources to avoid typing errors. Refer to the copy and paste tips for more information.

At the command line prompt, enter the following command to list the files in the root directory:

# cd /
# ls -l

The main directories in the root of the filesystem (/) are described in the following table:

Main Directories in the Root of the Filesystem

Directory Name	Description
bin	Program and commands for users
boot	Files needed at boot time
dev	Files that represent devices on your system
etc	Configuration files
home	User home directories
lib	System libraries and drivers
media	Location of removable media, such as USB flash drives and microSD cards
proc	Files that represent information about the system
sbin	System maintenance programs
sys	System files
tmp	Temporary files
usr	Programs available for all users. The DT7837 example programs are located under this directory in: usr/local/bin/dt78xx-examples
var	System log files

Change to the /usr/local/bin/dt78xx-examples directory, where the DT7837 example programs are located, by entering the following command:

# cd /usr/local/bin/dt78xx-examples

List the contents of this directory by entering the command:

# ls -l

The DT7837 example programs are displayed:

You can now wire signals to your module and verify the operation of the DT7837 module using these examples.

Refer to your Linux documentation for more information on Linux concepts, commands, and usage. Refer to the DT7837 File I/O Programming Manual for DT7837-specific Linux commands used by the DT7837 examples to access the functionality of the DT7837 module.