linux ifconfig

Linux's IP commands are similar to ifconfig , but the former is more powerful and intended to replace the latter. With the IP command, you can easily perform some network administration tasks with just one command. Ifconfig is a command that has been deprecated in net-tools and has not been maintained for many years. Many of the enhanced commands are available in the Iproute2 suite, which is one of the IP c

1. Fix a MAC address, especially when using multiple virtual machinesIn the Linux environment:Log in as root and add these three sentences to the/etc/rc.d/rc.local.Ifconfig eth0 Downifconfig eth0 hw ether 00:0c:18:ef:ff:edIfconfig eth0 upSo again after the reboot is not afraid of Mac recovery.2. Ifconfig order (reprint http://www.cnblogs.com/taobataoma/archive/2007/12/27/1016689.html)

The IP address belongs to the kernel, not the NIC. As long as the kernel has to be able to ping through.Common types of network adapters:Lo (loopback): local loopback.Ethnum: Ethernet network card. CentOS7 in the ensnums.Pppnum: Point-to-point.To load a module configuration file:/etc/modprobe.confIn CentOS, only the/etc/modprobe.conf/folder can be created manually./etc/udev/rules.d/#ifconfig [OPTION] [DEVICE] [ip/mask| IP MASK] [up|donw] Displays the

:192.168.0.0/24--192.168.255.0/24RoutingHost route: The destination address is a hostNetwork routing: The destination address is a networkIfonfig:-A: Displays configuration information for all interfaces Ifconfig [eth#]: Specify View ifconfig eth# 10.1.1.4/8 (ip/mask) [up | down]: Specify the IP address and subnet mask for a deviceThe configured address takes effect immediately, but restarting the network s

#!/bin/bashIp= "' Ifconfig eth0|awk-f" [:]+ "' nr==2 {print $4} ' _$ (date%f%h%m)"Execution of the script through SH is normal, and the crontab scheduled task call is NULL,*/1 * * * */bin/sh/scripts/tar.sh >/dev/null 2>1Workaround:Solve the problem of changing the ifconfig in the script to the perfect path/sbin/ifconfigIp= "'/sbin/ifconfig eth0|awk-f" [:]+ "' nr=

[Root @ XXX ~] # Ifconfig Eth0 Link encap: Ethernet HWaddr 00: 0C: 29: C8: 87: DB Inet addr: 192.168.5.103 Bcast: 192.168.5.255 Mask: 255.255.255.0 Inet6 addr: fe80: 20c: 29ff: fec8: 87db/64 Scope: Link Up broadcast running multicast mtu: 1500 Metric: 1 RX packets: 215632 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 87 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 FIG: 1000 RX bytes: 15503343 (14.7 MiB) TX bytes: 10634 (10.3 KiB)

1. Fix a MAC address, especially when using multiple virtual machinesIn the Linux environment:Log in as root and add these three sentences to the/etc/rc.d/rc.local.Ifconfig eth0 Downifconfig eth0 hw ether 00:0c:18:ef:ff:edIfconfig eth0 upThis re-reboot will not be afraid of Mac recovery.2. Ifconfig order (reprint http://www.cnblogs.com/taobataoma/archive/2007/12/27/1016689.html)

Command name: PingFunction: Test network connectivityCommand path:/bin/pingUsage: ping [-c] IP addressParameters:-C specify number of times to sendCommand name: ifconfigFunction: View and set network card information (temporary settings)Command path:/sbin/ifconfigUsage: ifconfig [NIC name] [IP Address]Example:Ifconfig eth0 192.168.1.1Command name: tracerouteFunction: Displays the path between the packet and the target host and the time consumed by eac

ifconfig is a command that is used to display or configure network devices in a Linux system.Ifconfig English full Name: Network interfaces configuring (Web interface Configuration)Under the Windows system, you need to use DOS command ipconfig to display the IP address information command ipconfig English full name: Internet Protocol Configuring (IP address configuration)= = = " Ip:internet Protocol (Interc

TCP: Transmission Control Protocol SYN: Request signal ACK: controlled command for acknowledgmentUDP: User Datagram ProtocolUDP belongs to a TIP/IP protocol family1. Turn on network port statusNetstat is a console command and is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual network connections, and status information for each network interface device. The netstat is used to display statistics related to IP, TCP, UDP, and ICMP protocols, and is typica

Copy of the colleague's Linux system, copy over can also use, today again open found no IP, so on the Internet to find solutions, because I have never contacted Linux so check a lot of but the solution of the method tried several is not, the following effective solution is found:Linux uses the/etc/network/interfaces configuration file to load the NIC. In the default configuration, it instructs

Terminal input Ifconfig:[Email protected] ~]# ifconfig eth0 Link encap:ethernet HWaddr 00:16:3e:00:1e:51 ... eth1 Link encap:ethernet HWaddr 00:16:3e:00:1e:51 inet addr:10.160.7.81 bcast:10.160.15.255 mask:255.255.240.0 ... .Lo ......Explanation: Eth0 The first NIC, eth1 the second NIC.Ifconfig eth0 up

IfconfigThe syntax for ifconfig is: Ifconfig [-A] [-v] [-S] [[] ] [[-]broadcast [ ]] [Netmask ] [Up|down] Where interface for the network card name, address for IP addresses, broadcast to set the broadcast address, followed by the address for broadcast addresses IP, netmask to set the subnet mask, then address for the subnet mask IP, up and down settings Current network card status, up indicates the

IfconfigRouteIpIP routeOne, ifconfig command (view or configure IP)1. View Network Connections# ifconfig \ Show all active connections, not packet-disabled devicesOr# IFCONFIG-A \ Show all active and inactive connectionsDisplays the connection for the specified interface# ifconfig Eth12. Configure IP Address#

Linux under the general use of Ifconfig to obtain network interface device information, the input is as follows: Eth0 Link encap:ethernet hwaddr 52:54:00:fa:9e:91 inet addr:192.168.129.46 bcast:192.168.129.255 mask:255.255.255.0 Inet6 ADDR:FE80::5054:FF:FEFA:9E91/64 Scope:link Up broadcast RUNNING multicast mtu:1500 metric:1 RX packets:96430 errors:0 dropped:0 overruns:0 frame:0 TX packets:10274 errors:0 dr

Prompt command does not existCause: The system default environment variable is not setAnd, Ifconfig is exactly in the/sbin inside.Under Cat/etc/profile, you can find no environment variables about/sbin.Linux, accustomed to using gedit)Path= $PATH:/sbin # Append/sbin directory after PATH variableSave and exit.After the change is complete, execute the command:. . Bash_profile, you can also log off or restart to make the content you just modified take ef

The NIC information displayed by ifconfig does not match the configuration file name. ifconfig does not matchFor example, in my configuration file, cd/etc/sysconfig/network-scripts/ifcfg-Auto_eth0 is the name, but the information I display with ifconfig is Eth6 Link encap: Ethernet HWaddr 08: 00: 27: 3F: 55: 54 inet addr: 192.168.137.103 Bcast: 192.168.1

If RedHat is installed on the VM, enter the command line ifconfig and the prompt Bash: ifconfig: Command not found is displayed. This is because in the environment variables,No complete variables have been set. Enter/sbin/ifconfig or/usr/bin/GCC to execute the command line. The best way is to configure the path for the user. VI ~ /. In bash_profile, press "I" to

[Root@localhost ~]# ifup eth0[Root@localhost ~]# Ifdown eth0This is true for activating other types of network interfaces, such as Ppp0,wlan0, but only for network adapters that specify IP.Note: The IP assigned to DHCP is also activated by the network tools that come with each release, and of course you have to install the DHCP client;Like Redhat/fedora.[Root@localhost ~]#/etc/init.d/network startSlackware Release edition;[Root@localhost ~]#/etc/rc.d/rc.inet1-------------------------------------

The network parameters of Ubuntu are stored in The file/etc/network/interfaces. dhcp is used by default. The content is as follows: # The primary network interfaceauto eth0iface eth0 inet dhcp setting static IP is as follows:1) edit/etc/network/interfaces1.1) to block a dhcp line # The primary network interfaceauto eth0 www.2cto.com # iface eth0 inet dhcp 1.2) add parameters related to static IP # The primary network interfaceiface eth0 inet staticaddress 192.168.0.10netmask 255.255.255.0gateway