User`s manual

High Performance Low Cost Embedded Systems
3.1.8 Command Line
The “terminal” is a commonly used interface in Linux. Users can command the system very
easily via a command line window. There are various ways to open a terminal. For instance, you
can set the system’s terminal to a serial port then this terminal will be a serial port terminal whose
input and output are both through the serial port terminal without relying on a graphic interface.
This is the most popular way in Linux.
On system startup, you can point the terminal to a graphic display device (such as LCD, CRT) and
the input to the keyboard. This will create another input output system without using a PC.
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