<big>'''How to enter the command line of the development board linux system?'''
1. '''1. For the method of using the serial port to log in to the terminal, please refer to the instructions in the section on how to use the debugging serial port.'''2. '''2. Use ssh to remotely log in to the Linux system, please refer to the instructions in the section of SSH remote login to the development board.'''3. '''3. If a display screen such as HDMI or LCD is connected, you can open a command line terminal on the desktop.'''
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