Common network commands in Linux

I. Commands for setting network parameters
Ifconfig: Query, set network card and IP network and other related parameters

[[email protected] ~]# ifconfig {interface} {down|up}[[email protected] ~]# ifconfig interface {options}interface：eth0、eth1、ppp0options：mtu、up,down、netmask、broadcast[[email protected] ~]# ifconfig eth0 192.168.10.11 netmask 255.255.255.128 mtu 8000修改文件参数[[email protected] ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0[[email protected] ~]# service network restart

Ifup, Ifdown: Starting and shutting down the network interface

[[email protected] ~]# ifup {interface}[[email protected] ~]# ifdown {interface}

Route: View, configure routing tables

[[email protected] ~]# route [-nee][[email protected] ~]# route add [-net|-host] [网络或主机] netmask [mask] [gw|dev][[email protected] ~]# route del [-net|-host] [网络或主机] netmask [mask] [gw|dev]-n：不要使用通信协议或主机名，直接使用IP或port number-ee：显示更详细的信息[[email protected] ~]# route add -net 192.168.10.0 netmask 255.255.255.0 dev eth0[[email protected] ~]# route add default gw 192.168.1.250

IP: Integrated command, can directly modify various parameters

[[email protected] ~]# ip [options] [动作] [命令]link：与设备相关的设置，MTU、MAC地址等[[email protected] ~]# ip [-s] link show[[email protected] ~]# ip link set [device] [动作或参数] //up|down、address、name、mtuaddr/address[[email protected] ~]# ip address show[[email protected] ~]# ip address [add|del] [IP参数] [dev设备名] [相关参数]route[[email protected] ~]# ip route show[[email protected] ~]# ip route [add|del] [IP或网络号] [via gateway] [dev 设备]

Second, wireless network: Iwlist, Iwconfig

Third, DHCP client command: dhclient

[[email protected] ~]# dhclient eth0

Iv. Network troubleshooting and Viewing commands

ping[[email protected] ~]# ping [选项与参数] IP[[email protected] ~]# ping -c 3 192.168.1.1 //指定发三个ICMP数据包traceroute[[email protected] ~]# traceroute [选项与参数] IP-n：单纯使用IP-U：使用UDP-I：使用ICMP-T：使用TCP-w：默认5秒不响应则不通-p：端口号-i：设备[[email protected] ~]# traceroute -n www.baidu.comnetstat[[email protected] ~]# netstat -[rn] //查看路由[[email protected] ~]# netstat -[antulpc] //与网络接口有关的参数-a：所有-t：TCP-u：UDP-l：Listen状态的服务-p：列出PID和Program的文件名-c：设置几秒钟后自动更新一次host、dig、nslookup //检测主机名对于的IPtelnet、ssh //远程连接服务ftp、lftp  //远程数据传输tcpdump、wireshark //数据包捕获功能links、wget //网页相关功能nc、netcat //启动任意TCP/UDP数据包的端口连接[[email protected] ~]# nc [-u] [IP|Port] [Port][[email protected] ~]# nc -l [IP|Port] [Port]-u：使用UDP[[email protected] ~]# nc localhost 25

Common network commands in Linux