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DIR: /sys/bus/serial-base/drivers/port
/sys/bus/serial-base/drivers/port/

Name	Size	Permissions	Options
00:00:0.0	--	drwxr-xr-x
serial8250:0.1	--	drwxr-xr-x
serial8250:0.2	--	drwxr-xr-x
serial8250:0.3	--	drwxr-xr-x

uevent	4 KB	--w-------

5h-3LL 1.0