Centos7和RHEL7最小安裝中替換ifconfig和netstat的命令
阿新 • • 發佈：2019-01-01
ifconfig改用ip addr
# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 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: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:50:56:ba:0b:07 brd ff:ff:ff:ff:ff:ff inet 163.17.xx.xx/25 brd 163.17.40.127 scope global ens192 valid_lft forever preferred_lft forever inet6 2001:288:5400:0:250:56ff:feba:b07/64 scope global dynamic valid_lft 2591718sec preferred_lft 2591718sec inet6 fe80::250:56ff:feba:b07/64 scope link valid_lft forever preferred_lft forever
檢視介面傳輸狀態-s是詳細顯示
# ip -s link 1: lo: <loopback,up,lower_up> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 RX: bytes packets errors dropped overrun mcast 4400 45 0 0 0 0 TX: bytes packets errors dropped carrier collsns 4400 45 0 0 0 0 2: ens192: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000 link/ether 00:50:56:ba:0b:07 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 207938930 2541628 0 1809366 0 495 TX: bytes packets errors dropped carrier collsns 788417 8512 0 0 0 0
# ip link
1: lo: <loopback,up,lower_up> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens192: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
link/ether 00:50:56:ba:0b:07 brd ff:ff:ff:ff:ff:ffnetstat改用ss
netstat是很重要的連線觀察工具，使用新的指令ss來取代，功能也是差不多。
TCP listen
# ss -ltUDP listen
# ss -ulTCP連線
# ss -ttraceroute/traceroute6改成tracepath
# tracepath 168.95.1.1
1: 163.17.XX.XX 0.187ms pmtu 1500
1: 163.17.40.126 0.263ms
2: 163.17.38.250 0.555ms
3: br-NCHU-APTG.TANet.edu.tw 19.799ms
4: no reply
5: tchn-3302.hinet.net 1.395ms asymm 6
6: tchn-3011.hinet.net 15.089ms
7: 202-39-179-185.HINET-IP.hinet.net 1.533ms
8: 202-39-179-173.HINET-IP.hinet.net 4.435ms reached
Resume: pmtu 1500 hops 8 back 248
route改為ip -route
route table 看起來有點不習慣
# ip routeroute6 IPv6的route table
# ip -6 rouarp改為ip nei檢視附件的arp和IPv6的neighbor，這個把v6 v4整合的還不錯。
# ip neighbor網絡卡介面開關
# ifconfig eth1 up
# ifconfig eth1 down改為
# ip l set eth1 up
# ip l set eth1 down