dmesg | grep tty
conner@conner-W65KJ1-KK1:~$ dmesg | grep tty
[ 0.000000] console [tty0] enabled
[ 4.599129] usb 1-6.2: ch341-uart converter now attached to ttyUSB0
[10141.352899] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[10150.576564] usb 1-6.2: ch341-uart converter now attached to ttyUSB0
[19497.313215] usb 1-6.4: ch341-uart converter now attached to ttyUSB1
[24269.595783] ch341-uart ttyUSB1: ch341-uart converter now disconnected from ttyUSB1
[24270.875544] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[24316.739048] cdc_acm 1-6.2:1.0: ttyACM0: USB ACM device
[24323.373251] cdc_acm 1-6.2:1.0: ttyACM0: USB ACM device
[24334.100816] cdc_acm 1-6.2:1.0: ttyACM0: USB ACM device
自己看不解釋