/sys/bus/serial-base/drivers/port/
/sys/bus/serial-base/drivers/port
NameSizeModeActions
00:04:0.0/-0755rm
serial8250:0.1/-0755rm
serial8250:0.2/-0755rm
serial8250:0.3/-0755rm
uevent40960200editdlrm
Delete serial8250:0.2 ?
cmd: