Centos7和RHEL7最小安装中替换ifconfig和netstat的命令

ifconfig改用ip addr

# ip addr
1: lo:  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:  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

查看介面传输状态-s是详细显示

# ip -s link
1: lo:  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:  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:  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:  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

netstat改用ss

netstat是很重要的连线观察工具，使用新的指令ss来取代，功能也是差不多。

TCP listen

# ss -lt

UDP listen

# ss -ul

TCP连线

# ss -t

traceroute/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改为ip -route

route table 看起来有点不习惯

# ip route

route6 IPv6的route table

# ip -6 rou

arp改为ip nei查看附件的arp和IPv6的neighbor，这个把v6 v4整合的还不错。

# ip neighbor

网卡接口开关

# ifconfig eth1 up
# ifconfig eth1 down

改为

# ip l set eth1 up  
# ip l set eth1 down

仅为记录