CentOS 7 & 8 最小化安装，没有ifconfig ，netstat 命令
我们可以直接使用下列命令安装
CentOS 7 & CentOS 8
yum install -y net-toolsCentOS 8
dnf install -y net-toolsifconfig
[root@localhost ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.1.1.233 netmask 255.255.254.0 broadcast 10.86.1.255
inet6 fe80::63f0:a292:5d15:8166 prefixlen 64 scopeid 0x20<link>
ether 00:15:5d:0c:31:0c txqueuelen 1000 (Ethernet)
RX packets 121218 bytes 16065578 (15.3 MiB)
RX errors 0 dropped 1112 overruns 0 frame 0
TX packets 769 bytes 442919 (432.5 KiB)
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 206 bytes 12180 (11.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 206 bytes 12180 (11.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost ~]# netstat命令
[root@localhost ~]# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 894/sshd
tcp 0 0 0.0.0.0:10050 0.0.0.0:* LISTEN 917/zabbix_agentd
tcp6 0 0 :::80 :::* LISTEN 904/httpd
tcp6 0 0 :::22 :::* LISTEN 894/sshd
tcp6 0 0 :::10050 :::* LISTEN 917/zabbix_agentd
tcp6 0 0 :::3306 :::* LISTEN 992/mysqld
udp 0 0 127.0.0.1:323 0.0.0.0:* 881/chronyd
udp6 0 0 ::1:323 :::* 881/chronyd
[root@localhost ~]#