命令：
ioreg -p IOUSB -l -b | grep -E "@|PortNum|USB Serial Number"
给出：
o USB 2.0 Hub@14200000 <class AppleUSBDevice, id 0x1000311c8, registered, matched, active, busy 0 (1 ms), retain 14>
{
"sessionID" = 28933243797551
"iManufacturer" = 0
"bNumConfigurations" = 1
"idProduct" = 1025
"bcdDevice" = 256
"Bus Power Available" = 500
"USB Address" = 9
"bMaxPacketSize0" = 64
"iProduct" = 1
"iSerialNumber" = 0
"bDeviceClass" = 9
"Built-In" = No
"locationID" = 337641472
"bDeviceSubClass" = 0
"bcdUSB" = 512
"USB Product Name" = "USB 2.0 Hub"
"PortNum" = 2
"non-removable" = "no"
"IOCFPlugInTypes" = {"9dc7b780-9ec0-11d4-a54f-000a27052861"="IOUSBFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
"bDeviceProtocol" = 1
"IOUserClientClass" = "IOUSBDeviceUserClientV2"
"IOPowerManagement" = {"DevicePowerState"=0,"CurrentPowerState"=3,"CapabilityFlags"=65536,"MaxPowerState"=4,"DriverPowerState"=3}
"Device Speed" = 2
"idVendor" = 6720
"IOGeneralInterest" = "IOCommand is not serializable"
"IOClassNameOverride" = "IOUSBDevice"
}
这是确切的设备。但是我在查找“tty”系统中的端口名称时遇到了麻烦。