Ubuntu ifconfig view network card information lo enp2s0 wlp3s0 specific meaning

tags: Linux ubuntu ifconfig enp2s0 wlp3s0

Meaning

How to check the local IP through commands?
Windows：ipconfig /a
Linux：ifconfigoriwconfig
I will see 3 items:
lo
wlp3s0
enp2s0
parse one by one:

loMeanslocal
wlMeanswlan(Wireless Local Area Network)
enMeansethernetEthernet
The coordinates of the physical location of the PCI interface(bus, slot), Where bus represents the bus and slot represents the slot.

Look again:

wlp3s0Indicates the location of the WLAN PCI interface: bus=3, slot=0.
enp2s0Indicates that Etnernet PCI interface location: bus=2, slot=0.

PCI Peripheral Component Interconnect

shell operation

wuyujin@ubuntu18:~$ ifconfig
enp2s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether [xxx]  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 16285  bytes 1914437 (1.9 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 16285  bytes 1914437 (1.9 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet [IP address]  netmask [Gateway address]  broadcast [Subnet mask]
        inet6 [IPV6]  prefixlen 64  scopeid 0x20<link>
        ether [xxx]  txqueuelen 1000  (Ethernet)
        RX packets 926526  bytes 1261489274 (1.2 GB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 377109  bytes 50598690 (50.5 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wuyujin@ubuntu18:~$

Others

wuyujin@ubuntu18:~$ whatis ifconfig
ifconfig (8)         - configure a network interface
wuyujin@ubuntu18:~$ whatis iwconfig
iwconfig (8)         - configure a wireless network interface
wuyujin@ubuntu18:~$

ifconfig is used to configure the network interfaceInterFace config
iwconfig is used to configure the wireless network interfaceInterface Wlan config

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