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<code>[[wikipedia:ifconfig|ifconfig]]</code>is a command in Unix-like operating systems like Linux<ref>https://linux.die.net/man/8/ifconfig</ref>, [[FreeBSD]], [[OpenBSD]], [[macOS]] for [[Ethernet]] network interface configuration. | <code>[[wikipedia:ifconfig|ifconfig]]</code>is a command in Unix-like operating systems like Linux<ref>https://linux.die.net/man/8/ifconfig</ref>, [[FreeBSD]], [[OpenBSD]], [[macOS]] for [[Ethernet]] network interface configuration. | ||
− | In [[macOS]], the <code>ifconfig</code> command functions as a [[Wrapper pattern|wrapper]] to the IPConfiguration agent, and can control the [[BootP]] and | + | In [[macOS]], the <code>ifconfig</code> command functions as a [[Wrapper pattern|wrapper]] to the IPConfiguration agent, and can control the [[BootP]] and DHCP clients from the command-line. Use of <code>ifconfig</code> to modify network settings in Mac OS X is discouraged, because <code>ifconfig</code> operates below the level of the system frameworks which help manage network configuration. To change network settings in Mac OS X from the command line, use <code>/usr/sbin/ipconfig</code> or <code>/usr/sbin/[[macOS/networksetup|networksetup]]</code>. |
− | <code>ifconfig</code> command is included in the <code> | + | <code>ifconfig</code> command is included in the <code>net-tools</code> package but not installed by default in RHEL since version 7<ref>https://lwn.net/Articles/710533</ref>. |
− | == | + | == macOS alias == |
+ | Configure 3 alias in <code>en1</code> interface, https://ss64.com/osx/ifconfig.html: | ||
+ | <pre> | ||
+ | sudo ifconfig en1 inet 192.168.10.2/24 add | ||
+ | sudo ifconfig en1 inet 192.168.20.2/24 add | ||
+ | sudo ifconfig en1 inet 192.168.30.2/24 add | ||
+ | </pre> | ||
+ | or | ||
+ | <pre> | ||
+ | sudo ifconfig en1 inet 192.168.10.2/24 alias | ||
+ | sudo ifconfig en1 inet 192.168.20.2/24 alias | ||
+ | sudo ifconfig en1 inet 192.168.30.2/24 alias | ||
+ | </pre> | ||
== Activities == | == Activities == | ||
− | * Show interface configuration in Linux including ip addresses: <code> | + | * Show interface configuration in Linux including ip addresses: <code>ifconfig -a</code> or <code>ip a</code> |
* Show interface Ethernet network capabilities of your interface, such as speed, with: <code>mii-tool -v YOUR_INTERFACE_NAME</code>, <code>mii-tool -v eth0</code> | * Show interface Ethernet network capabilities of your interface, such as speed, with: <code>mii-tool -v YOUR_INTERFACE_NAME</code>, <code>mii-tool -v eth0</code> | ||
− | * | + | * Show all network inferfaces in Linux:<ref>https://www.cyberciti.biz/faq/linux-list-network-cards-command/</ref> |
+ | ::<code>[[lspci] | egrep -i --color 'network|ethernet'</code> | ||
+ | ::<code>[[lshw]] -class network</code> | ||
+ | ::<code>[[ifconfig -a]]</code> | ||
+ | ::<code>[[ip link]] show</code> | ||
+ | ::<code>ip a</code> | ||
+ | ::<code>cat /proc/net/dev</code> | ||
+ | ::<code>systemd/networkctl|networkctl list</code> | ||
+ | ::<code>nmcli|nmcli device show</code> | ||
+ | |||
* Learn about [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/ch-consistent_network_device_naming Linux Naming Schemes Hierarchy]. | * Learn about [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/ch-consistent_network_device_naming Linux Naming Schemes Hierarchy]. | ||
* Change your [[MAC]] address: <code>ifconfig {eth0|wlan0} hw ether CA:CA:CA:CA:CA:CA</code> | * Change your [[MAC]] address: <code>ifconfig {eth0|wlan0} hw ether CA:CA:CA:CA:CA:CA</code> | ||
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== See also == | == See also == | ||
− | * {{Linux networking}} | + | * {{Linux networking commands}} |
* <code>[[ipconfig]]</code> Windows command | * <code>[[ipconfig]]</code> Windows command | ||
− | * | + | * [[networksetup (command)]] ([[macOS]]) |
* [[bonding]] | * [[bonding]] | ||
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