Configure Network and Hostname

In RH7 ifconfig command is deprecated and new command is ip addr

tracepath is new command replaced tracert

ss –a will list all the listening and established ports

ip –s link show <<Ethernet>>

Using network manager to configure IP

list all the network devices attached
# ls /sys/class/net
OR
# nmcli dev status



Show all the connections
# nmcli con show


 Check the network configuration.



Configure a DHCP address for a nic card



Configure static IP for a nic card


Enable and disable Ethernet




Modify the Ethernet to auto connect at boot.



Delete a network configuration



Hostname Configuration:

/etc/resolv.conf contains the DNS suffixes and name server details




Alternatively, The remote host names can be configured on /etc/hosts file



In /etc/nsswitch.conf the order of name resolution is defined.


Here in this case the order is files then followed by DNS.

Change the hostname

# hostnamectl set-hostname <<new_hostname>>