Ifconfig
ifconfig
is a command in Unix-like operating systems like Linux[1], FreeBSD, OpenBSD, macOS for Ethernet network interface configuration.
In macOS, the ifconfig
command functions as a wrapper to the IPConfiguration agent, and can control the BootP and DHCP clients from the command-line. Use of ifconfig
to modify network settings in macOS is discouraged, because ifconfig
operates below the level of the system frameworks which help manage network configuration. To change network settings in macOS from the command line, use /usr/sbin/ipconfig
or /usr/sbin/networksetup
.
ifconfig
command is included in the net-tools
package but not installed by default in RHEL since version 7[2].
macOS alias
[edit | edit source]Configure 3 alias in en1
interface, https://ss64.com/osx/ifconfig.html:
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
or
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
Activities
[edit | edit source]- Show interface configuration in Linux including ip addresses:
ifconfig -a
orip a
- Show interface Ethernet network capabilities of your interface, such as speed, with:
mii-tool -v YOUR_INTERFACE_NAME
,mii-tool -v eth0
- Show all network inferfaces in Linux:[3]
lspci | egrep -i --color 'network|ethernet'
lshw -class network
ifconfig -a
ip link show
ip a
cat /proc/net/dev
systemd/networkctl|networkctl list
nmcli|nmcli device show
- Learn about Linux Naming Schemes Hierarchy.
See also
[edit | edit source]netstat
ipconfig
Windows command- networksetup (command) (macOS)