[ Linux ] IP (ip v4) 확인 하기

1. hostname 사용 shell> hostname -I (대문자 I (아이))   [root@testcentos bin]# hostname -I 192.168.122.1   2. ip addr show (show 는 생략 가능함) : inet 뒤를 확인   shell> ip addr show   [root@testcentos bin]# ip addr show 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ens33: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:0c:29:a1:32:a2 brd ff:ff:ff:ff:ff:ff 3: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 52:54:00:89:ba:3d brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 4: virbr0-nic: mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000 link/ether 52:54:00:89:ba:3d brd ff:ff:ff:ff:ff:ff   3. ifconfig 사용 : inet 뒤를 확인   [root@testcentos bin]# ifconfig ens33: flags=4163 mtu 1500 ether 00:0c:29:a1:32:a2 txqueuelen 1000 (Ethernet) RX packets 504 bytes 31200 (30.4 KiB) 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 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 1461 bytes 125259 (122.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1461 bytes 125259 (122.3 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr0: flags=4099 mtu 1500 inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 ether 52:54:00:89:ba:3d 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