How to check fortigate interface current transmit and receive speed via cli?

Hi WQ

It is the same command. See the two lines in bold below.

FG # diagnose hardware deviceinfo nic port1
Description         Fortinet 100D Ethernet Driver
System_Device_Name  port1
Current_HWaddr      xx:xx:xx:xx:xx:xx
Permanent_HWaddr    xx:xx:xx:xx:xx:xx
State               up
Link                up
PHY Link            up
Speed               1000
Duplex              full
port:               4
def vid             4091
cur_vid             4091
netdev_running      1
stp:                0
mac_bypass          0
pci_rx              0
Rx_Packets          7851998 
Tx_Packets          12224295 
Rx_Bytes            1953613745 
Tx_Bytes            14562918700